diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ModelServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ModelServiceClient.java
index ace59387bd5d..d8dd83499456 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ModelServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1/ModelServiceClient.java
@@ -266,6 +266,7 @@ public final OperationFuture<UploadModelResponse, UploadModelOperationMetadata>
    *           .setParentModel("parentModel998431903")
    *           .setModelId("modelId1226956324")
    *           .setModel(Model.newBuilder().build())
+   *           .setServiceAccount("serviceAccount1079137720")
    *           .build();
    *   UploadModelResponse response = modelServiceClient.uploadModelAsync(request).get();
    * }
@@ -298,6 +299,7 @@ public final OperationFuture<UploadModelResponse, UploadModelOperationMetadata>
    *           .setParentModel("parentModel998431903")
    *           .setModelId("modelId1226956324")
    *           .setModel(Model.newBuilder().build())
+   *           .setServiceAccount("serviceAccount1079137720")
    *           .build();
    *   OperationFuture<UploadModelResponse, UploadModelOperationMetadata> future =
    *       modelServiceClient.uploadModelOperationCallable().futureCall(request);
@@ -331,6 +333,7 @@ public final OperationFuture<UploadModelResponse, UploadModelOperationMetadata>
    *           .setParentModel("parentModel998431903")
    *           .setModelId("modelId1226956324")
    *           .setModel(Model.newBuilder().build())
+   *           .setServiceAccount("serviceAccount1079137720")
    *           .build();
    *   ApiFuture<Operation> future = modelServiceClient.uploadModelCallable().futureCall(request);
    *   // Do something.
diff --git a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelServiceClient.java b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelServiceClient.java
index 7b98970f05ac..245d0b204463 100644
--- a/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelServiceClient.java
+++ b/java-aiplatform/google-cloud-aiplatform/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelServiceClient.java
@@ -268,6 +268,7 @@ public final OperationFuture<UploadModelResponse, UploadModelOperationMetadata>
    *           .setParentModel("parentModel998431903")
    *           .setModelId("modelId1226956324")
    *           .setModel(Model.newBuilder().build())
+   *           .setServiceAccount("serviceAccount1079137720")
    *           .build();
    *   UploadModelResponse response = modelServiceClient.uploadModelAsync(request).get();
    * }
@@ -300,6 +301,7 @@ public final OperationFuture<UploadModelResponse, UploadModelOperationMetadata>
    *           .setParentModel("parentModel998431903")
    *           .setModelId("modelId1226956324")
    *           .setModel(Model.newBuilder().build())
+   *           .setServiceAccount("serviceAccount1079137720")
    *           .build();
    *   OperationFuture<UploadModelResponse, UploadModelOperationMetadata> future =
    *       modelServiceClient.uploadModelOperationCallable().futureCall(request);
@@ -333,6 +335,7 @@ public final OperationFuture<UploadModelResponse, UploadModelOperationMetadata>
    *           .setParentModel("parentModel998431903")
    *           .setModelId("modelId1226956324")
    *           .setModel(Model.newBuilder().build())
+   *           .setServiceAccount("serviceAccount1079137720")
    *           .build();
    *   ApiFuture<Operation> future = modelServiceClient.uploadModelCallable().futureCall(request);
    *   // Do something.
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ModelServiceProto.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ModelServiceProto.java
index 5df5bb9a612a..1adefcd456fb 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ModelServiceProto.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/ModelServiceProto.java
@@ -152,182 +152,183 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + "tion_slice.proto\032*google/cloud/aiplatfor"
           + "m/v1/operation.proto\032#google/longrunning"
           + "/operations.proto\032 google/protobuf/field"
-          + "_mask.proto\"\270\001\n\022UploadModelRequest\0229\n\006pa"
+          + "_mask.proto\"\326\001\n\022UploadModelRequest\0229\n\006pa"
           + "rent\030\001 \001(\tB)\340A\002\372A#\n!locations.googleapis"
           + ".com/Location\022\031\n\014parent_model\030\004 \001(\tB\003\340A\001"
           + "\022\025\n\010model_id\030\005 \001(\tB\003\340A\001\0225\n\005model\030\002 \001(\0132!"
-          + ".google.cloud.aiplatform.v1.ModelB\003\340A\002\"n"
-          + "\n\034UploadModelOperationMetadata\022N\n\020generi"
-          + "c_metadata\030\001 \001(\01324.google.cloud.aiplatfo"
-          + "rm.v1.GenericOperationMetadata\"i\n\023Upload"
-          + "ModelResponse\0223\n\005model\030\001 \001(\tB$\372A!\n\037aipla"
-          + "tform.googleapis.com/Model\022\035\n\020model_vers"
-          + "ion_id\030\002 \001(\tB\003\340A\003\"H\n\017GetModelRequest\0225\n\004"
-          + "name\030\001 \001(\tB\'\340A\002\372A!\n\037aiplatform.googleapi"
-          + "s.com/Model\"\306\001\n\021ListModelsRequest\0229\n\006par"
-          + "ent\030\001 \001(\tB)\340A\002\372A#\n!locations.googleapis."
-          + "com/Location\022\016\n\006filter\030\002 \001(\t\022\021\n\tpage_siz"
-          + "e\030\003 \001(\005\022\022\n\npage_token\030\004 \001(\t\022-\n\tread_mask"
-          + "\030\005 \001(\0132\032.google.protobuf.FieldMask\022\020\n\010or"
-          + "der_by\030\006 \001(\t\"`\n\022ListModelsResponse\0221\n\006mo"
-          + "dels\030\001 \003(\0132!.google.cloud.aiplatform.v1."
-          + "Model\022\027\n\017next_page_token\030\002 \001(\t\"\267\001\n\030ListM"
-          + "odelVersionsRequest\0225\n\004name\030\001 \001(\tB\'\340A\002\372A"
-          + "!\n\037aiplatform.googleapis.com/Model\022\021\n\tpa"
-          + "ge_size\030\002 \001(\005\022\022\n\npage_token\030\003 \001(\t\022\016\n\006fil"
-          + "ter\030\004 \001(\t\022-\n\tread_mask\030\005 \001(\0132\032.google.pr"
-          + "otobuf.FieldMask\"g\n\031ListModelVersionsRes"
-          + "ponse\0221\n\006models\030\001 \003(\0132!.google.cloud.aip"
-          + "latform.v1.Model\022\027\n\017next_page_token\030\002 \001("
-          + "\t\"\201\001\n\022UpdateModelRequest\0225\n\005model\030\001 \001(\0132"
-          + "!.google.cloud.aiplatform.v1.ModelB\003\340A\002\022"
-          + "4\n\013update_mask\030\002 \001(\0132\032.google.protobuf.F"
-          + "ieldMaskB\003\340A\002\"K\n\022DeleteModelRequest\0225\n\004n"
-          + "ame\030\001 \001(\tB\'\340A\002\372A!\n\037aiplatform.googleapis"
-          + ".com/Model\"R\n\031DeleteModelVersionRequest\022"
-          + "5\n\004name\030\001 \001(\tB\'\340A\002\372A!\n\037aiplatform.google"
-          + "apis.com/Model\"q\n\032MergeVersionAliasesReq"
-          + "uest\0225\n\004name\030\001 \001(\tB\'\340A\002\372A!\n\037aiplatform.g"
-          + "oogleapis.com/Model\022\034\n\017version_aliases\030\002"
-          + " \003(\tB\003\340A\002\"\356\002\n\022ExportModelRequest\0225\n\004name"
-          + "\030\001 \001(\tB\'\340A\002\372A!\n\037aiplatform.googleapis.co"
-          + "m/Model\022W\n\routput_config\030\002 \001(\0132;.google."
-          + "cloud.aiplatform.v1.ExportModelRequest.O"
-          + "utputConfigB\003\340A\002\032\307\001\n\014OutputConfig\022\030\n\020exp"
-          + "ort_format_id\030\001 \001(\t\022H\n\024artifact_destinat"
-          + "ion\030\003 \001(\0132*.google.cloud.aiplatform.v1.G"
-          + "csDestination\022S\n\021image_destination\030\004 \001(\013"
-          + "28.google.cloud.aiplatform.v1.ContainerR"
-          + "egistryDestination\"\234\002\n\034ExportModelOperat"
-          + "ionMetadata\022N\n\020generic_metadata\030\001 \001(\01324."
-          + "google.cloud.aiplatform.v1.GenericOperat"
-          + "ionMetadata\022]\n\013output_info\030\002 \001(\0132C.googl"
-          + "e.cloud.aiplatform.v1.ExportModelOperati"
-          + "onMetadata.OutputInfoB\003\340A\003\032M\n\nOutputInfo"
-          + "\022 \n\023artifact_output_uri\030\002 \001(\tB\003\340A\003\022\035\n\020im"
-          + "age_output_uri\030\003 \001(\tB\003\340A\003\"\025\n\023ExportModel"
-          + "Response\"\243\001\n\034ImportModelEvaluationReques"
-          + "t\0227\n\006parent\030\001 \001(\tB\'\340A\002\372A!\n\037aiplatform.go"
-          + "ogleapis.com/Model\022J\n\020model_evaluation\030\002"
-          + " \001(\0132+.google.cloud.aiplatform.v1.ModelE"
-          + "valuationB\003\340A\002\"\304\001\n\'BatchImportModelEvalu"
-          + "ationSlicesRequest\022A\n\006parent\030\001 \001(\tB1\340A\002\372"
-          + "A+\n)aiplatform.googleapis.com/ModelEvalu"
-          + "ation\022V\n\027model_evaluation_slices\030\002 \003(\01320"
+          + ".google.cloud.aiplatform.v1.ModelB\003\340A\002\022\034"
+          + "\n\017service_account\030\006 \001(\tB\003\340A\001\"n\n\034UploadMo"
+          + "delOperationMetadata\022N\n\020generic_metadata"
+          + "\030\001 \001(\01324.google.cloud.aiplatform.v1.Gene"
+          + "ricOperationMetadata\"i\n\023UploadModelRespo"
+          + "nse\0223\n\005model\030\001 \001(\tB$\372A!\n\037aiplatform.goog"
+          + "leapis.com/Model\022\035\n\020model_version_id\030\002 \001"
+          + "(\tB\003\340A\003\"H\n\017GetModelRequest\0225\n\004name\030\001 \001(\t"
+          + "B\'\340A\002\372A!\n\037aiplatform.googleapis.com/Mode"
+          + "l\"\306\001\n\021ListModelsRequest\0229\n\006parent\030\001 \001(\tB"
+          + ")\340A\002\372A#\n!locations.googleapis.com/Locati"
+          + "on\022\016\n\006filter\030\002 \001(\t\022\021\n\tpage_size\030\003 \001(\005\022\022\n"
+          + "\npage_token\030\004 \001(\t\022-\n\tread_mask\030\005 \001(\0132\032.g"
+          + "oogle.protobuf.FieldMask\022\020\n\010order_by\030\006 \001"
+          + "(\t\"`\n\022ListModelsResponse\0221\n\006models\030\001 \003(\013"
+          + "2!.google.cloud.aiplatform.v1.Model\022\027\n\017n"
+          + "ext_page_token\030\002 \001(\t\"\267\001\n\030ListModelVersio"
+          + "nsRequest\0225\n\004name\030\001 \001(\tB\'\340A\002\372A!\n\037aiplatf"
+          + "orm.googleapis.com/Model\022\021\n\tpage_size\030\002 "
+          + "\001(\005\022\022\n\npage_token\030\003 \001(\t\022\016\n\006filter\030\004 \001(\t\022"
+          + "-\n\tread_mask\030\005 \001(\0132\032.google.protobuf.Fie"
+          + "ldMask\"g\n\031ListModelVersionsResponse\0221\n\006m"
+          + "odels\030\001 \003(\0132!.google.cloud.aiplatform.v1"
+          + ".Model\022\027\n\017next_page_token\030\002 \001(\t\"\201\001\n\022Upda"
+          + "teModelRequest\0225\n\005model\030\001 \001(\0132!.google.c"
+          + "loud.aiplatform.v1.ModelB\003\340A\002\0224\n\013update_"
+          + "mask\030\002 \001(\0132\032.google.protobuf.FieldMaskB\003"
+          + "\340A\002\"K\n\022DeleteModelRequest\0225\n\004name\030\001 \001(\tB"
+          + "\'\340A\002\372A!\n\037aiplatform.googleapis.com/Model"
+          + "\"R\n\031DeleteModelVersionRequest\0225\n\004name\030\001 "
+          + "\001(\tB\'\340A\002\372A!\n\037aiplatform.googleapis.com/M"
+          + "odel\"q\n\032MergeVersionAliasesRequest\0225\n\004na"
+          + "me\030\001 \001(\tB\'\340A\002\372A!\n\037aiplatform.googleapis."
+          + "com/Model\022\034\n\017version_aliases\030\002 \003(\tB\003\340A\002\""
+          + "\356\002\n\022ExportModelRequest\0225\n\004name\030\001 \001(\tB\'\340A"
+          + "\002\372A!\n\037aiplatform.googleapis.com/Model\022W\n"
+          + "\routput_config\030\002 \001(\0132;.google.cloud.aipl"
+          + "atform.v1.ExportModelRequest.OutputConfi"
+          + "gB\003\340A\002\032\307\001\n\014OutputConfig\022\030\n\020export_format"
+          + "_id\030\001 \001(\t\022H\n\024artifact_destination\030\003 \001(\0132"
+          + "*.google.cloud.aiplatform.v1.GcsDestinat"
+          + "ion\022S\n\021image_destination\030\004 \001(\01328.google."
+          + "cloud.aiplatform.v1.ContainerRegistryDes"
+          + "tination\"\234\002\n\034ExportModelOperationMetadat"
+          + "a\022N\n\020generic_metadata\030\001 \001(\01324.google.clo"
+          + "ud.aiplatform.v1.GenericOperationMetadat"
+          + "a\022]\n\013output_info\030\002 \001(\0132C.google.cloud.ai"
+          + "platform.v1.ExportModelOperationMetadata"
+          + ".OutputInfoB\003\340A\003\032M\n\nOutputInfo\022 \n\023artifa"
+          + "ct_output_uri\030\002 \001(\tB\003\340A\003\022\035\n\020image_output"
+          + "_uri\030\003 \001(\tB\003\340A\003\"\025\n\023ExportModelResponse\"\243"
+          + "\001\n\034ImportModelEvaluationRequest\0227\n\006paren"
+          + "t\030\001 \001(\tB\'\340A\002\372A!\n\037aiplatform.googleapis.c"
+          + "om/Model\022J\n\020model_evaluation\030\002 \001(\0132+.goo"
+          + "gle.cloud.aiplatform.v1.ModelEvaluationB"
+          + "\003\340A\002\"\304\001\n\'BatchImportModelEvaluationSlice"
+          + "sRequest\022A\n\006parent\030\001 \001(\tB1\340A\002\372A+\n)aiplat"
+          + "form.googleapis.com/ModelEvaluation\022V\n\027m"
+          + "odel_evaluation_slices\030\002 \003(\01320.google.cl"
+          + "oud.aiplatform.v1.ModelEvaluationSliceB\003"
+          + "\340A\002\"Y\n(BatchImportModelEvaluationSlicesR"
+          + "esponse\022-\n imported_model_evaluation_sli"
+          + "ces\030\001 \003(\tB\003\340A\003\"\\\n\031GetModelEvaluationRequ"
+          + "est\022?\n\004name\030\001 \001(\tB1\340A\002\372A+\n)aiplatform.go"
+          + "ogleapis.com/ModelEvaluation\"\274\001\n\033ListMod"
+          + "elEvaluationsRequest\0227\n\006parent\030\001 \001(\tB\'\340A"
+          + "\002\372A!\n\037aiplatform.googleapis.com/Model\022\016\n"
+          + "\006filter\030\002 \001(\t\022\021\n\tpage_size\030\003 \001(\005\022\022\n\npage"
+          + "_token\030\004 \001(\t\022-\n\tread_mask\030\005 \001(\0132\032.google"
+          + ".protobuf.FieldMask\"\177\n\034ListModelEvaluati"
+          + "onsResponse\022F\n\021model_evaluations\030\001 \003(\0132+"
           + ".google.cloud.aiplatform.v1.ModelEvaluat"
-          + "ionSliceB\003\340A\002\"Y\n(BatchImportModelEvaluat"
-          + "ionSlicesResponse\022-\n imported_model_eval"
-          + "uation_slices\030\001 \003(\tB\003\340A\003\"\\\n\031GetModelEval"
-          + "uationRequest\022?\n\004name\030\001 \001(\tB1\340A\002\372A+\n)aip"
-          + "latform.googleapis.com/ModelEvaluation\"\274"
-          + "\001\n\033ListModelEvaluationsRequest\0227\n\006parent"
-          + "\030\001 \001(\tB\'\340A\002\372A!\n\037aiplatform.googleapis.co"
-          + "m/Model\022\016\n\006filter\030\002 \001(\t\022\021\n\tpage_size\030\003 \001"
-          + "(\005\022\022\n\npage_token\030\004 \001(\t\022-\n\tread_mask\030\005 \001("
-          + "\0132\032.google.protobuf.FieldMask\"\177\n\034ListMod"
-          + "elEvaluationsResponse\022F\n\021model_evaluatio"
-          + "ns\030\001 \003(\0132+.google.cloud.aiplatform.v1.Mo"
-          + "delEvaluation\022\027\n\017next_page_token\030\002 \001(\t\"f"
-          + "\n\036GetModelEvaluationSliceRequest\022D\n\004name"
-          + "\030\001 \001(\tB6\340A\002\372A0\n.aiplatform.googleapis.co"
-          + "m/ModelEvaluationSlice\"\313\001\n ListModelEval"
-          + "uationSlicesRequest\022A\n\006parent\030\001 \001(\tB1\340A\002"
-          + "\372A+\n)aiplatform.googleapis.com/ModelEval"
-          + "uation\022\016\n\006filter\030\002 \001(\t\022\021\n\tpage_size\030\003 \001("
-          + "\005\022\022\n\npage_token\030\004 \001(\t\022-\n\tread_mask\030\005 \001(\013"
-          + "2\032.google.protobuf.FieldMask\"\217\001\n!ListMod"
-          + "elEvaluationSlicesResponse\022Q\n\027model_eval"
-          + "uation_slices\030\001 \003(\01320.google.cloud.aipla"
-          + "tform.v1.ModelEvaluationSlice\022\027\n\017next_pa"
-          + "ge_token\030\002 \001(\t2\362\031\n\014ModelService\022\340\001\n\013Uplo"
-          + "adModel\022..google.cloud.aiplatform.v1.Upl"
-          + "oadModelRequest\032\035.google.longrunning.Ope"
-          + "ration\"\201\001\202\323\344\223\0026\"1/v1/{parent=projects/*/"
-          + "locations/*}/models:upload:\001*\332A\014parent,m"
-          + "odel\312A3\n\023UploadModelResponse\022\034UploadMode"
-          + "lOperationMetadata\022\225\001\n\010GetModel\022+.google"
-          + ".cloud.aiplatform.v1.GetModelRequest\032!.g"
-          + "oogle.cloud.aiplatform.v1.Model\"9\202\323\344\223\002,\022"
-          + "*/v1/{name=projects/*/locations/*/models"
-          + "/*}\332A\004name\022\250\001\n\nListModels\022-.google.cloud"
-          + ".aiplatform.v1.ListModelsRequest\032..googl"
-          + "e.cloud.aiplatform.v1.ListModelsResponse"
-          + "\";\202\323\344\223\002,\022*/v1/{parent=projects/*/locatio"
-          + "ns/*}/models\332A\006parent\022\310\001\n\021ListModelVersi"
-          + "ons\0224.google.cloud.aiplatform.v1.ListMod"
-          + "elVersionsRequest\0325.google.cloud.aiplatf"
-          + "orm.v1.ListModelVersionsResponse\"F\202\323\344\223\0029"
-          + "\0227/v1/{name=projects/*/locations/*/model"
-          + "s/*}:listVersions\332A\004name\022\265\001\n\013UpdateModel"
-          + "\022..google.cloud.aiplatform.v1.UpdateMode"
-          + "lRequest\032!.google.cloud.aiplatform.v1.Mo"
-          + "del\"S\202\323\344\223\002920/v1/{model.name=projects/*/"
-          + "locations/*/models/*}:\005model\332A\021model,upd"
-          + "ate_mask\022\312\001\n\013DeleteModel\022..google.cloud."
-          + "aiplatform.v1.DeleteModelRequest\032\035.googl"
-          + "e.longrunning.Operation\"l\202\323\344\223\002,**/v1/{na"
-          + "me=projects/*/locations/*/models/*}\332A\004na"
-          + "me\312A0\n\025google.protobuf.Empty\022\027DeleteOper"
-          + "ationMetadata\022\346\001\n\022DeleteModelVersion\0225.g"
-          + "oogle.cloud.aiplatform.v1.DeleteModelVer"
-          + "sionRequest\032\035.google.longrunning.Operati"
-          + "on\"z\202\323\344\223\002:*8/v1/{name=projects/*/locatio"
-          + "ns/*/models/*}:deleteVersion\332A\004name\312A0\n\025"
-          + "google.protobuf.Empty\022\027DeleteOperationMe"
-          + "tadata\022\322\001\n\023MergeVersionAliases\0226.google."
-          + "cloud.aiplatform.v1.MergeVersionAliasesR"
-          + "equest\032!.google.cloud.aiplatform.v1.Mode"
-          + "l\"`\202\323\344\223\002C\">/v1/{name=projects/*/location"
-          + "s/*/models/*}:mergeVersionAliases:\001*\332A\024n"
-          + "ame,version_aliases\022\346\001\n\013ExportModel\022..go"
-          + "ogle.cloud.aiplatform.v1.ExportModelRequ"
-          + "est\032\035.google.longrunning.Operation\"\207\001\202\323\344"
-          + "\223\0026\"1/v1/{name=projects/*/locations/*/mo"
-          + "dels/*}:export:\001*\332A\022name,output_config\312A"
-          + "3\n\023ExportModelResponse\022\034ExportModelOpera"
-          + "tionMetadata\022\344\001\n\025ImportModelEvaluation\0228"
-          + ".google.cloud.aiplatform.v1.ImportModelE"
-          + "valuationRequest\032+.google.cloud.aiplatfo"
-          + "rm.v1.ModelEvaluation\"d\202\323\344\223\002D\"?/v1/{pare"
-          + "nt=projects/*/locations/*/models/*}/eval"
-          + "uations:import:\001*\332A\027parent,model_evaluat"
-          + "ion\022\250\002\n BatchImportModelEvaluationSlices"
-          + "\022C.google.cloud.aiplatform.v1.BatchImpor"
-          + "tModelEvaluationSlicesRequest\032D.google.c"
-          + "loud.aiplatform.v1.BatchImportModelEvalu"
-          + "ationSlicesResponse\"y\202\323\344\223\002R\"M/v1/{parent"
-          + "=projects/*/locations/*/models/*/evaluat"
-          + "ions/*}/slices:batchImport:\001*\332A\036parent,m"
-          + "odel_evaluation_slices\022\301\001\n\022GetModelEvalu"
-          + "ation\0225.google.cloud.aiplatform.v1.GetMo"
-          + "delEvaluationRequest\032+.google.cloud.aipl"
-          + "atform.v1.ModelEvaluation\"G\202\323\344\223\002:\0228/v1/{"
-          + "name=projects/*/locations/*/models/*/eva"
-          + "luations/*}\332A\004name\022\324\001\n\024ListModelEvaluati"
-          + "ons\0227.google.cloud.aiplatform.v1.ListMod"
-          + "elEvaluationsRequest\0328.google.cloud.aipl"
-          + "atform.v1.ListModelEvaluationsResponse\"I"
-          + "\202\323\344\223\002:\0228/v1/{parent=projects/*/locations"
-          + "/*/models/*}/evaluations\332A\006parent\022\331\001\n\027Ge"
-          + "tModelEvaluationSlice\022:.google.cloud.aip"
-          + "latform.v1.GetModelEvaluationSliceReques"
-          + "t\0320.google.cloud.aiplatform.v1.ModelEval"
-          + "uationSlice\"P\202\323\344\223\002C\022A/v1/{name=projects/"
-          + "*/locations/*/models/*/evaluations/*/sli"
-          + "ces/*}\332A\004name\022\354\001\n\031ListModelEvaluationSli"
-          + "ces\022<.google.cloud.aiplatform.v1.ListMod"
-          + "elEvaluationSlicesRequest\032=.google.cloud"
-          + ".aiplatform.v1.ListModelEvaluationSlices"
-          + "Response\"R\202\323\344\223\002C\022A/v1/{parent=projects/*"
-          + "/locations/*/models/*/evaluations/*}/sli"
-          + "ces\332A\006parent\032M\312A\031aiplatform.googleapis.c"
-          + "om\322A.https://www.googleapis.com/auth/clo"
-          + "ud-platformB\325\001\n\036com.google.cloud.aiplatf"
-          + "orm.v1B\021ModelServiceProtoP\001ZDgoogle.gola"
-          + "ng.org/genproto/googleapis/cloud/aiplatf"
-          + "orm/v1;aiplatform\252\002\032Google.Cloud.AIPlatf"
-          + "orm.V1\312\002\032Google\\Cloud\\AIPlatform\\V1\352\002\035Go"
-          + "ogle::Cloud::AIPlatform::V1b\006proto3"
+          + "ion\022\027\n\017next_page_token\030\002 \001(\t\"f\n\036GetModel"
+          + "EvaluationSliceRequest\022D\n\004name\030\001 \001(\tB6\340A"
+          + "\002\372A0\n.aiplatform.googleapis.com/ModelEva"
+          + "luationSlice\"\313\001\n ListModelEvaluationSlic"
+          + "esRequest\022A\n\006parent\030\001 \001(\tB1\340A\002\372A+\n)aipla"
+          + "tform.googleapis.com/ModelEvaluation\022\016\n\006"
+          + "filter\030\002 \001(\t\022\021\n\tpage_size\030\003 \001(\005\022\022\n\npage_"
+          + "token\030\004 \001(\t\022-\n\tread_mask\030\005 \001(\0132\032.google."
+          + "protobuf.FieldMask\"\217\001\n!ListModelEvaluati"
+          + "onSlicesResponse\022Q\n\027model_evaluation_sli"
+          + "ces\030\001 \003(\01320.google.cloud.aiplatform.v1.M"
+          + "odelEvaluationSlice\022\027\n\017next_page_token\030\002"
+          + " \001(\t2\362\031\n\014ModelService\022\340\001\n\013UploadModel\022.."
+          + "google.cloud.aiplatform.v1.UploadModelRe"
+          + "quest\032\035.google.longrunning.Operation\"\201\001\202"
+          + "\323\344\223\0026\"1/v1/{parent=projects/*/locations/"
+          + "*}/models:upload:\001*\332A\014parent,model\312A3\n\023U"
+          + "ploadModelResponse\022\034UploadModelOperation"
+          + "Metadata\022\225\001\n\010GetModel\022+.google.cloud.aip"
+          + "latform.v1.GetModelRequest\032!.google.clou"
+          + "d.aiplatform.v1.Model\"9\202\323\344\223\002,\022*/v1/{name"
+          + "=projects/*/locations/*/models/*}\332A\004name"
+          + "\022\250\001\n\nListModels\022-.google.cloud.aiplatfor"
+          + "m.v1.ListModelsRequest\032..google.cloud.ai"
+          + "platform.v1.ListModelsResponse\";\202\323\344\223\002,\022*"
+          + "/v1/{parent=projects/*/locations/*}/mode"
+          + "ls\332A\006parent\022\310\001\n\021ListModelVersions\0224.goog"
+          + "le.cloud.aiplatform.v1.ListModelVersions"
+          + "Request\0325.google.cloud.aiplatform.v1.Lis"
+          + "tModelVersionsResponse\"F\202\323\344\223\0029\0227/v1/{nam"
+          + "e=projects/*/locations/*/models/*}:listV"
+          + "ersions\332A\004name\022\265\001\n\013UpdateModel\022..google."
+          + "cloud.aiplatform.v1.UpdateModelRequest\032!"
+          + ".google.cloud.aiplatform.v1.Model\"S\202\323\344\223\002"
+          + "920/v1/{model.name=projects/*/locations/"
+          + "*/models/*}:\005model\332A\021model,update_mask\022\312"
+          + "\001\n\013DeleteModel\022..google.cloud.aiplatform"
+          + ".v1.DeleteModelRequest\032\035.google.longrunn"
+          + "ing.Operation\"l\202\323\344\223\002,**/v1/{name=project"
+          + "s/*/locations/*/models/*}\332A\004name\312A0\n\025goo"
+          + "gle.protobuf.Empty\022\027DeleteOperationMetad"
+          + "ata\022\346\001\n\022DeleteModelVersion\0225.google.clou"
+          + "d.aiplatform.v1.DeleteModelVersionReques"
+          + "t\032\035.google.longrunning.Operation\"z\202\323\344\223\002:"
+          + "*8/v1/{name=projects/*/locations/*/model"
+          + "s/*}:deleteVersion\332A\004name\312A0\n\025google.pro"
+          + "tobuf.Empty\022\027DeleteOperationMetadata\022\322\001\n"
+          + "\023MergeVersionAliases\0226.google.cloud.aipl"
+          + "atform.v1.MergeVersionAliasesRequest\032!.g"
+          + "oogle.cloud.aiplatform.v1.Model\"`\202\323\344\223\002C\""
+          + ">/v1/{name=projects/*/locations/*/models"
+          + "/*}:mergeVersionAliases:\001*\332A\024name,versio"
+          + "n_aliases\022\346\001\n\013ExportModel\022..google.cloud"
+          + ".aiplatform.v1.ExportModelRequest\032\035.goog"
+          + "le.longrunning.Operation\"\207\001\202\323\344\223\0026\"1/v1/{"
+          + "name=projects/*/locations/*/models/*}:ex"
+          + "port:\001*\332A\022name,output_config\312A3\n\023ExportM"
+          + "odelResponse\022\034ExportModelOperationMetada"
+          + "ta\022\344\001\n\025ImportModelEvaluation\0228.google.cl"
+          + "oud.aiplatform.v1.ImportModelEvaluationR"
+          + "equest\032+.google.cloud.aiplatform.v1.Mode"
+          + "lEvaluation\"d\202\323\344\223\002D\"?/v1/{parent=project"
+          + "s/*/locations/*/models/*}/evaluations:im"
+          + "port:\001*\332A\027parent,model_evaluation\022\250\002\n Ba"
+          + "tchImportModelEvaluationSlices\022C.google."
+          + "cloud.aiplatform.v1.BatchImportModelEval"
+          + "uationSlicesRequest\032D.google.cloud.aipla"
+          + "tform.v1.BatchImportModelEvaluationSlice"
+          + "sResponse\"y\202\323\344\223\002R\"M/v1/{parent=projects/"
+          + "*/locations/*/models/*/evaluations/*}/sl"
+          + "ices:batchImport:\001*\332A\036parent,model_evalu"
+          + "ation_slices\022\301\001\n\022GetModelEvaluation\0225.go"
+          + "ogle.cloud.aiplatform.v1.GetModelEvaluat"
+          + "ionRequest\032+.google.cloud.aiplatform.v1."
+          + "ModelEvaluation\"G\202\323\344\223\002:\0228/v1/{name=proje"
+          + "cts/*/locations/*/models/*/evaluations/*"
+          + "}\332A\004name\022\324\001\n\024ListModelEvaluations\0227.goog"
+          + "le.cloud.aiplatform.v1.ListModelEvaluati"
+          + "onsRequest\0328.google.cloud.aiplatform.v1."
+          + "ListModelEvaluationsResponse\"I\202\323\344\223\002:\0228/v"
+          + "1/{parent=projects/*/locations/*/models/"
+          + "*}/evaluations\332A\006parent\022\331\001\n\027GetModelEval"
+          + "uationSlice\022:.google.cloud.aiplatform.v1"
+          + ".GetModelEvaluationSliceRequest\0320.google"
+          + ".cloud.aiplatform.v1.ModelEvaluationSlic"
+          + "e\"P\202\323\344\223\002C\022A/v1/{name=projects/*/location"
+          + "s/*/models/*/evaluations/*/slices/*}\332A\004n"
+          + "ame\022\354\001\n\031ListModelEvaluationSlices\022<.goog"
+          + "le.cloud.aiplatform.v1.ListModelEvaluati"
+          + "onSlicesRequest\032=.google.cloud.aiplatfor"
+          + "m.v1.ListModelEvaluationSlicesResponse\"R"
+          + "\202\323\344\223\002C\022A/v1/{parent=projects/*/locations"
+          + "/*/models/*/evaluations/*}/slices\332A\006pare"
+          + "nt\032M\312A\031aiplatform.googleapis.com\322A.https"
+          + "://www.googleapis.com/auth/cloud-platfor"
+          + "mB\325\001\n\036com.google.cloud.aiplatform.v1B\021Mo"
+          + "delServiceProtoP\001ZDgoogle.golang.org/gen"
+          + "proto/googleapis/cloud/aiplatform/v1;aip"
+          + "latform\252\002\032Google.Cloud.AIPlatform.V1\312\002\032G"
+          + "oogle\\Cloud\\AIPlatform\\V1\352\002\035Google::Clou"
+          + "d::AIPlatform::V1b\006proto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
@@ -351,7 +352,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_cloud_aiplatform_v1_UploadModelRequest_descriptor,
             new java.lang.String[] {
-              "Parent", "ParentModel", "ModelId", "Model",
+              "Parent", "ParentModel", "ModelId", "Model", "ServiceAccount",
             });
     internal_static_google_cloud_aiplatform_v1_UploadModelOperationMetadata_descriptor =
         getDescriptor().getMessageTypes().get(1);
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/UploadModelRequest.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/UploadModelRequest.java
index 7328f20b7be5..962664ea0dc7 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/UploadModelRequest.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/UploadModelRequest.java
@@ -41,6 +41,7 @@ private UploadModelRequest() {
     parent_ = "";
     parentModel_ = "";
     modelId_ = "";
+    serviceAccount_ = "";
   }
 
   @java.lang.Override
@@ -279,6 +280,67 @@ public com.google.cloud.aiplatform.v1.ModelOrBuilder getModelOrBuilder() {
     return getModel();
   }
 
+  public static final int SERVICE_ACCOUNT_FIELD_NUMBER = 6;
+  private volatile java.lang.Object serviceAccount_;
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The user-provided custom service account to use to do the model
+   * upload. If empty, [Vertex AI Service
+   * Agent](https://cloud.google.com/vertex-ai/docs/general/access-control#service-agents)
+   * will be used. Users uploading the Model must have the
+   * `iam.serviceAccounts.actAs` permission on this service account. Also, this
+   * account must belong to the project specified in the `parent` field and have
+   * all necessary read permissions.
+   * </pre>
+   *
+   * <code>string service_account = 6 [(.google.api.field_behavior) = OPTIONAL];</code>
+   *
+   * @return The serviceAccount.
+   */
+  @java.lang.Override
+  public java.lang.String getServiceAccount() {
+    java.lang.Object ref = serviceAccount_;
+    if (ref instanceof java.lang.String) {
+      return (java.lang.String) ref;
+    } else {
+      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+      java.lang.String s = bs.toStringUtf8();
+      serviceAccount_ = s;
+      return s;
+    }
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The user-provided custom service account to use to do the model
+   * upload. If empty, [Vertex AI Service
+   * Agent](https://cloud.google.com/vertex-ai/docs/general/access-control#service-agents)
+   * will be used. Users uploading the Model must have the
+   * `iam.serviceAccounts.actAs` permission on this service account. Also, this
+   * account must belong to the project specified in the `parent` field and have
+   * all necessary read permissions.
+   * </pre>
+   *
+   * <code>string service_account = 6 [(.google.api.field_behavior) = OPTIONAL];</code>
+   *
+   * @return The bytes for serviceAccount.
+   */
+  @java.lang.Override
+  public com.google.protobuf.ByteString getServiceAccountBytes() {
+    java.lang.Object ref = serviceAccount_;
+    if (ref instanceof java.lang.String) {
+      com.google.protobuf.ByteString b =
+          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+      serviceAccount_ = b;
+      return b;
+    } else {
+      return (com.google.protobuf.ByteString) ref;
+    }
+  }
+
   private byte memoizedIsInitialized = -1;
 
   @java.lang.Override
@@ -305,6 +367,9 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(modelId_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 5, modelId_);
     }
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(serviceAccount_)) {
+      com.google.protobuf.GeneratedMessageV3.writeString(output, 6, serviceAccount_);
+    }
     getUnknownFields().writeTo(output);
   }
 
@@ -326,6 +391,9 @@ public int getSerializedSize() {
     if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(modelId_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(5, modelId_);
     }
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(serviceAccount_)) {
+      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(6, serviceAccount_);
+    }
     size += getUnknownFields().getSerializedSize();
     memoizedSize = size;
     return size;
@@ -349,6 +417,7 @@ public boolean equals(final java.lang.Object obj) {
     if (hasModel()) {
       if (!getModel().equals(other.getModel())) return false;
     }
+    if (!getServiceAccount().equals(other.getServiceAccount())) return false;
     if (!getUnknownFields().equals(other.getUnknownFields())) return false;
     return true;
   }
@@ -370,6 +439,8 @@ public int hashCode() {
       hash = (37 * hash) + MODEL_FIELD_NUMBER;
       hash = (53 * hash) + getModel().hashCode();
     }
+    hash = (37 * hash) + SERVICE_ACCOUNT_FIELD_NUMBER;
+    hash = (53 * hash) + getServiceAccount().hashCode();
     hash = (29 * hash) + getUnknownFields().hashCode();
     memoizedHashCode = hash;
     return hash;
@@ -520,6 +591,8 @@ public Builder clear() {
         model_ = null;
         modelBuilder_ = null;
       }
+      serviceAccount_ = "";
+
       return this;
     }
 
@@ -555,6 +628,7 @@ public com.google.cloud.aiplatform.v1.UploadModelRequest buildPartial() {
       } else {
         result.model_ = modelBuilder_.build();
       }
+      result.serviceAccount_ = serviceAccount_;
       onBuilt();
       return result;
     }
@@ -620,6 +694,10 @@ public Builder mergeFrom(com.google.cloud.aiplatform.v1.UploadModelRequest other
       if (other.hasModel()) {
         mergeModel(other.getModel());
       }
+      if (!other.getServiceAccount().isEmpty()) {
+        serviceAccount_ = other.serviceAccount_;
+        onChanged();
+      }
       this.mergeUnknownFields(other.getUnknownFields());
       onChanged();
       return this;
@@ -670,6 +748,12 @@ public Builder mergeFrom(
 
                 break;
               } // case 42
+            case 50:
+              {
+                serviceAccount_ = input.readStringRequireUtf8();
+
+                break;
+              } // case 50
             default:
               {
                 if (!super.parseUnknownField(input, extensionRegistry, tag)) {
@@ -1230,6 +1314,142 @@ public com.google.cloud.aiplatform.v1.ModelOrBuilder getModelOrBuilder() {
       return modelBuilder_;
     }
 
+    private java.lang.Object serviceAccount_ = "";
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The user-provided custom service account to use to do the model
+     * upload. If empty, [Vertex AI Service
+     * Agent](https://cloud.google.com/vertex-ai/docs/general/access-control#service-agents)
+     * will be used. Users uploading the Model must have the
+     * `iam.serviceAccounts.actAs` permission on this service account. Also, this
+     * account must belong to the project specified in the `parent` field and have
+     * all necessary read permissions.
+     * </pre>
+     *
+     * <code>string service_account = 6 [(.google.api.field_behavior) = OPTIONAL];</code>
+     *
+     * @return The serviceAccount.
+     */
+    public java.lang.String getServiceAccount() {
+      java.lang.Object ref = serviceAccount_;
+      if (!(ref instanceof java.lang.String)) {
+        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        serviceAccount_ = s;
+        return s;
+      } else {
+        return (java.lang.String) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The user-provided custom service account to use to do the model
+     * upload. If empty, [Vertex AI Service
+     * Agent](https://cloud.google.com/vertex-ai/docs/general/access-control#service-agents)
+     * will be used. Users uploading the Model must have the
+     * `iam.serviceAccounts.actAs` permission on this service account. Also, this
+     * account must belong to the project specified in the `parent` field and have
+     * all necessary read permissions.
+     * </pre>
+     *
+     * <code>string service_account = 6 [(.google.api.field_behavior) = OPTIONAL];</code>
+     *
+     * @return The bytes for serviceAccount.
+     */
+    public com.google.protobuf.ByteString getServiceAccountBytes() {
+      java.lang.Object ref = serviceAccount_;
+      if (ref instanceof String) {
+        com.google.protobuf.ByteString b =
+            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+        serviceAccount_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The user-provided custom service account to use to do the model
+     * upload. If empty, [Vertex AI Service
+     * Agent](https://cloud.google.com/vertex-ai/docs/general/access-control#service-agents)
+     * will be used. Users uploading the Model must have the
+     * `iam.serviceAccounts.actAs` permission on this service account. Also, this
+     * account must belong to the project specified in the `parent` field and have
+     * all necessary read permissions.
+     * </pre>
+     *
+     * <code>string service_account = 6 [(.google.api.field_behavior) = OPTIONAL];</code>
+     *
+     * @param value The serviceAccount to set.
+     * @return This builder for chaining.
+     */
+    public Builder setServiceAccount(java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+
+      serviceAccount_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The user-provided custom service account to use to do the model
+     * upload. If empty, [Vertex AI Service
+     * Agent](https://cloud.google.com/vertex-ai/docs/general/access-control#service-agents)
+     * will be used. Users uploading the Model must have the
+     * `iam.serviceAccounts.actAs` permission on this service account. Also, this
+     * account must belong to the project specified in the `parent` field and have
+     * all necessary read permissions.
+     * </pre>
+     *
+     * <code>string service_account = 6 [(.google.api.field_behavior) = OPTIONAL];</code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearServiceAccount() {
+
+      serviceAccount_ = getDefaultInstance().getServiceAccount();
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The user-provided custom service account to use to do the model
+     * upload. If empty, [Vertex AI Service
+     * Agent](https://cloud.google.com/vertex-ai/docs/general/access-control#service-agents)
+     * will be used. Users uploading the Model must have the
+     * `iam.serviceAccounts.actAs` permission on this service account. Also, this
+     * account must belong to the project specified in the `parent` field and have
+     * all necessary read permissions.
+     * </pre>
+     *
+     * <code>string service_account = 6 [(.google.api.field_behavior) = OPTIONAL];</code>
+     *
+     * @param value The bytes for serviceAccount to set.
+     * @return This builder for chaining.
+     */
+    public Builder setServiceAccountBytes(com.google.protobuf.ByteString value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      checkByteStringIsUtf8(value);
+
+      serviceAccount_ = value;
+      onChanged();
+      return this;
+    }
+
     @java.lang.Override
     public final Builder setUnknownFields(final com.google.protobuf.UnknownFieldSet unknownFields) {
       return super.setUnknownFields(unknownFields);
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/UploadModelRequestOrBuilder.java b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/UploadModelRequestOrBuilder.java
index 8d56f7c9dc3f..11cb3dd79be5 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/UploadModelRequestOrBuilder.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/java/com/google/cloud/aiplatform/v1/UploadModelRequestOrBuilder.java
@@ -149,4 +149,41 @@ public interface UploadModelRequestOrBuilder
    * </code>
    */
   com.google.cloud.aiplatform.v1.ModelOrBuilder getModelOrBuilder();
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The user-provided custom service account to use to do the model
+   * upload. If empty, [Vertex AI Service
+   * Agent](https://cloud.google.com/vertex-ai/docs/general/access-control#service-agents)
+   * will be used. Users uploading the Model must have the
+   * `iam.serviceAccounts.actAs` permission on this service account. Also, this
+   * account must belong to the project specified in the `parent` field and have
+   * all necessary read permissions.
+   * </pre>
+   *
+   * <code>string service_account = 6 [(.google.api.field_behavior) = OPTIONAL];</code>
+   *
+   * @return The serviceAccount.
+   */
+  java.lang.String getServiceAccount();
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The user-provided custom service account to use to do the model
+   * upload. If empty, [Vertex AI Service
+   * Agent](https://cloud.google.com/vertex-ai/docs/general/access-control#service-agents)
+   * will be used. Users uploading the Model must have the
+   * `iam.serviceAccounts.actAs` permission on this service account. Also, this
+   * account must belong to the project specified in the `parent` field and have
+   * all necessary read permissions.
+   * </pre>
+   *
+   * <code>string service_account = 6 [(.google.api.field_behavior) = OPTIONAL];</code>
+   *
+   * @return The bytes for serviceAccount.
+   */
+  com.google.protobuf.ByteString getServiceAccountBytes();
 }
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/proto/google/cloud/aiplatform/v1/model_service.proto b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/proto/google/cloud/aiplatform/v1/model_service.proto
index 9ea6c56c4a83..b20d32d31661 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/proto/google/cloud/aiplatform/v1/model_service.proto
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1/src/main/proto/google/cloud/aiplatform/v1/model_service.proto
@@ -218,6 +218,15 @@ message UploadModelRequest {
 
   // Required. The Model to create.
   Model model = 2 [(google.api.field_behavior) = REQUIRED];
+
+  // Optional. The user-provided custom service account to use to do the model
+  // upload. If empty, [Vertex AI Service
+  // Agent](https://cloud.google.com/vertex-ai/docs/general/access-control#service-agents)
+  // will be used. Users uploading the Model must have the
+  // `iam.serviceAccounts.actAs` permission on this service account. Also, this
+  // account must belong to the project specified in the `parent` field and have
+  // all necessary read permissions.
+  string service_account = 6 [(google.api.field_behavior) = OPTIONAL];
 }
 
 // Details of [ModelService.UploadModel][google.cloud.aiplatform.v1.ModelService.UploadModel] operation.
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelServiceProto.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelServiceProto.java
index 5e55e20dbeaf..5346932c739f 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelServiceProto.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/ModelServiceProto.java
@@ -166,205 +166,206 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + "ation_slice.proto\032/google/cloud/aiplatfo"
           + "rm/v1beta1/operation.proto\032#google/longr"
           + "unning/operations.proto\032 google/protobuf"
-          + "/field_mask.proto\"\275\001\n\022UploadModelRequest"
+          + "/field_mask.proto\"\333\001\n\022UploadModelRequest"
           + "\0229\n\006parent\030\001 \001(\tB)\340A\002\372A#\n!locations.goog"
           + "leapis.com/Location\022\031\n\014parent_model\030\004 \001("
           + "\tB\003\340A\001\022\025\n\010model_id\030\005 \001(\tB\003\340A\001\022:\n\005model\030\002"
           + " \001(\0132&.google.cloud.aiplatform.v1beta1.M"
-          + "odelB\003\340A\002\"s\n\034UploadModelOperationMetadat"
-          + "a\022S\n\020generic_metadata\030\001 \001(\01329.google.clo"
-          + "ud.aiplatform.v1beta1.GenericOperationMe"
-          + "tadata\"i\n\023UploadModelResponse\0223\n\005model\030\001"
-          + " \001(\tB$\372A!\n\037aiplatform.googleapis.com/Mod"
-          + "el\022\035\n\020model_version_id\030\002 \001(\tB\003\340A\003\"H\n\017Get"
-          + "ModelRequest\0225\n\004name\030\001 \001(\tB\'\340A\002\372A!\n\037aipl"
-          + "atform.googleapis.com/Model\"\264\001\n\021ListMode"
-          + "lsRequest\0229\n\006parent\030\001 \001(\tB)\340A\002\372A#\n!locat"
-          + "ions.googleapis.com/Location\022\016\n\006filter\030\002"
-          + " \001(\t\022\021\n\tpage_size\030\003 \001(\005\022\022\n\npage_token\030\004 "
-          + "\001(\t\022-\n\tread_mask\030\005 \001(\0132\032.google.protobuf"
-          + ".FieldMask\"e\n\022ListModelsResponse\0226\n\006mode"
-          + "ls\030\001 \003(\0132&.google.cloud.aiplatform.v1bet"
-          + "a1.Model\022\027\n\017next_page_token\030\002 \001(\t\"\267\001\n\030Li"
-          + "stModelVersionsRequest\0225\n\004name\030\001 \001(\tB\'\340A"
-          + "\002\372A!\n\037aiplatform.googleapis.com/Model\022\021\n"
-          + "\tpage_size\030\002 \001(\005\022\022\n\npage_token\030\003 \001(\t\022\016\n\006"
-          + "filter\030\004 \001(\t\022-\n\tread_mask\030\005 \001(\0132\032.google"
-          + ".protobuf.FieldMask\"l\n\031ListModelVersions"
-          + "Response\0226\n\006models\030\001 \003(\0132&.google.cloud."
-          + "aiplatform.v1beta1.Model\022\027\n\017next_page_to"
-          + "ken\030\002 \001(\t\"\206\001\n\022UpdateModelRequest\022:\n\005mode"
-          + "l\030\001 \001(\0132&.google.cloud.aiplatform.v1beta"
-          + "1.ModelB\003\340A\002\0224\n\013update_mask\030\002 \001(\0132\032.goog"
-          + "le.protobuf.FieldMaskB\003\340A\002\"\226\001\n\037UpdateExp"
-          + "lanationDatasetRequest\0226\n\005model\030\001 \001(\tB\'\340"
-          + "A\002\372A!\n\037aiplatform.googleapis.com/Model\022;"
-          + "\n\010examples\030\002 \001(\0132).google.cloud.aiplatfo"
-          + "rm.v1beta1.Examples\"\200\001\n)UpdateExplanatio"
-          + "nDatasetOperationMetadata\022S\n\020generic_met"
-          + "adata\030\001 \001(\01329.google.cloud.aiplatform.v1"
-          + "beta1.GenericOperationMetadata\"K\n\022Delete"
-          + "ModelRequest\0225\n\004name\030\001 \001(\tB\'\340A\002\372A!\n\037aipl"
-          + "atform.googleapis.com/Model\"R\n\031DeleteMod"
-          + "elVersionRequest\0225\n\004name\030\001 \001(\tB\'\340A\002\372A!\n\037"
-          + "aiplatform.googleapis.com/Model\"q\n\032Merge"
-          + "VersionAliasesRequest\0225\n\004name\030\001 \001(\tB\'\340A\002"
-          + "\372A!\n\037aiplatform.googleapis.com/Model\022\034\n\017"
-          + "version_aliases\030\002 \003(\tB\003\340A\002\"\375\002\n\022ExportMod"
-          + "elRequest\0225\n\004name\030\001 \001(\tB\'\340A\002\372A!\n\037aiplatf"
-          + "orm.googleapis.com/Model\022\\\n\routput_confi"
-          + "g\030\002 \001(\0132@.google.cloud.aiplatform.v1beta"
-          + "1.ExportModelRequest.OutputConfigB\003\340A\002\032\321"
-          + "\001\n\014OutputConfig\022\030\n\020export_format_id\030\001 \001("
-          + "\t\022M\n\024artifact_destination\030\003 \001(\0132/.google"
-          + ".cloud.aiplatform.v1beta1.GcsDestination"
-          + "\022X\n\021image_destination\030\004 \001(\0132=.google.clo"
-          + "ud.aiplatform.v1beta1.ContainerRegistryD"
-          + "estination\"\246\002\n\034ExportModelOperationMetad"
-          + "ata\022S\n\020generic_metadata\030\001 \001(\01329.google.c"
-          + "loud.aiplatform.v1beta1.GenericOperation"
-          + "Metadata\022b\n\013output_info\030\002 \001(\0132H.google.c"
-          + "loud.aiplatform.v1beta1.ExportModelOpera"
-          + "tionMetadata.OutputInfoB\003\340A\003\032M\n\nOutputIn"
-          + "fo\022 \n\023artifact_output_uri\030\002 \001(\tB\003\340A\003\022\035\n\020"
-          + "image_output_uri\030\003 \001(\tB\003\340A\003\"\"\n UpdateExp"
-          + "lanationDatasetResponse\"\025\n\023ExportModelRe"
-          + "sponse\"\250\001\n\034ImportModelEvaluationRequest\022"
-          + "7\n\006parent\030\001 \001(\tB\'\340A\002\372A!\n\037aiplatform.goog"
-          + "leapis.com/Model\022O\n\020model_evaluation\030\002 \001"
-          + "(\01320.google.cloud.aiplatform.v1beta1.Mod"
-          + "elEvaluationB\003\340A\002\"\311\001\n\'BatchImportModelEv"
-          + "aluationSlicesRequest\022A\n\006parent\030\001 \001(\tB1\340"
-          + "A\002\372A+\n)aiplatform.googleapis.com/ModelEv"
-          + "aluation\022[\n\027model_evaluation_slices\030\002 \003("
-          + "\01325.google.cloud.aiplatform.v1beta1.Mode"
-          + "lEvaluationSliceB\003\340A\002\"Y\n(BatchImportMode"
-          + "lEvaluationSlicesResponse\022-\n imported_mo"
-          + "del_evaluation_slices\030\001 \003(\tB\003\340A\003\"\\\n\031GetM"
-          + "odelEvaluationRequest\022?\n\004name\030\001 \001(\tB1\340A\002"
-          + "\372A+\n)aiplatform.googleapis.com/ModelEval"
-          + "uation\"\274\001\n\033ListModelEvaluationsRequest\0227"
-          + "\n\006parent\030\001 \001(\tB\'\340A\002\372A!\n\037aiplatform.googl"
-          + "eapis.com/Model\022\016\n\006filter\030\002 \001(\t\022\021\n\tpage_"
-          + "size\030\003 \001(\005\022\022\n\npage_token\030\004 \001(\t\022-\n\tread_m"
-          + "ask\030\005 \001(\0132\032.google.protobuf.FieldMask\"\204\001"
-          + "\n\034ListModelEvaluationsResponse\022K\n\021model_"
-          + "evaluations\030\001 \003(\01320.google.cloud.aiplatf"
-          + "orm.v1beta1.ModelEvaluation\022\027\n\017next_page"
-          + "_token\030\002 \001(\t\"f\n\036GetModelEvaluationSliceR"
-          + "equest\022D\n\004name\030\001 \001(\tB6\340A\002\372A0\n.aiplatform"
-          + ".googleapis.com/ModelEvaluationSlice\"\313\001\n"
-          + " ListModelEvaluationSlicesRequest\022A\n\006par"
-          + "ent\030\001 \001(\tB1\340A\002\372A+\n)aiplatform.googleapis"
-          + ".com/ModelEvaluation\022\016\n\006filter\030\002 \001(\t\022\021\n\t"
-          + "page_size\030\003 \001(\005\022\022\n\npage_token\030\004 \001(\t\022-\n\tr"
-          + "ead_mask\030\005 \001(\0132\032.google.protobuf.FieldMa"
-          + "sk\"\224\001\n!ListModelEvaluationSlicesResponse"
-          + "\022V\n\027model_evaluation_slices\030\001 \003(\01325.goog"
-          + "le.cloud.aiplatform.v1beta1.ModelEvaluat"
-          + "ionSlice\022\027\n\017next_page_token\030\002 \001(\t2\354\035\n\014Mo"
-          + "delService\022\352\001\n\013UploadModel\0223.google.clou"
-          + "d.aiplatform.v1beta1.UploadModelRequest\032"
-          + "\035.google.longrunning.Operation\"\206\001\202\323\344\223\002;\""
-          + "6/v1beta1/{parent=projects/*/locations/*"
-          + "}/models:upload:\001*\332A\014parent,model\312A3\n\023Up"
-          + "loadModelResponse\022\034UploadModelOperationM"
-          + "etadata\022\244\001\n\010GetModel\0220.google.cloud.aipl"
-          + "atform.v1beta1.GetModelRequest\032&.google."
-          + "cloud.aiplatform.v1beta1.Model\">\202\323\344\223\0021\022/"
-          + "/v1beta1/{name=projects/*/locations/*/mo"
-          + "dels/*}\332A\004name\022\267\001\n\nListModels\0222.google.c"
-          + "loud.aiplatform.v1beta1.ListModelsReques"
-          + "t\0323.google.cloud.aiplatform.v1beta1.List"
-          + "ModelsResponse\"@\202\323\344\223\0021\022//v1beta1/{parent"
-          + "=projects/*/locations/*}/models\332A\006parent"
-          + "\022\327\001\n\021ListModelVersions\0229.google.cloud.ai"
-          + "platform.v1beta1.ListModelVersionsReques"
-          + "t\032:.google.cloud.aiplatform.v1beta1.List"
-          + "ModelVersionsResponse\"K\202\323\344\223\002>\022</v1beta1/"
-          + "{name=projects/*/locations/*/models/*}:l"
-          + "istVersions\332A\004name\022\304\001\n\013UpdateModel\0223.goo"
-          + "gle.cloud.aiplatform.v1beta1.UpdateModel"
-          + "Request\032&.google.cloud.aiplatform.v1beta"
-          + "1.Model\"X\202\323\344\223\002>25/v1beta1/{model.name=pr"
-          + "ojects/*/locations/*/models/*}:\005model\332A\021"
-          + "model,update_mask\022\252\002\n\030UpdateExplanationD"
-          + "ataset\022@.google.cloud.aiplatform.v1beta1"
-          + ".UpdateExplanationDatasetRequest\032\035.googl"
-          + "e.longrunning.Operation\"\254\001\202\323\344\223\002N\"I/v1bet"
-          + "a1/{model=projects/*/locations/*/models/"
-          + "*}:updateExplanationDataset:\001*\332A\005model\312A"
-          + "M\n UpdateExplanationDatasetResponse\022)Upd"
-          + "ateExplanationDatasetOperationMetadata\022\324"
-          + "\001\n\013DeleteModel\0223.google.cloud.aiplatform"
-          + ".v1beta1.DeleteModelRequest\032\035.google.lon"
-          + "grunning.Operation\"q\202\323\344\223\0021*//v1beta1/{na"
-          + "me=projects/*/locations/*/models/*}\332A\004na"
-          + "me\312A0\n\025google.protobuf.Empty\022\027DeleteOper"
-          + "ationMetadata\022\360\001\n\022DeleteModelVersion\022:.g"
-          + "oogle.cloud.aiplatform.v1beta1.DeleteMod"
-          + "elVersionRequest\032\035.google.longrunning.Op"
-          + "eration\"\177\202\323\344\223\002?*=/v1beta1/{name=projects"
-          + "/*/locations/*/models/*}:deleteVersion\332A"
-          + "\004name\312A0\n\025google.protobuf.Empty\022\027DeleteO"
-          + "perationMetadata\022\341\001\n\023MergeVersionAliases"
-          + "\022;.google.cloud.aiplatform.v1beta1.Merge"
-          + "VersionAliasesRequest\032&.google.cloud.aip"
-          + "latform.v1beta1.Model\"e\202\323\344\223\002H\"C/v1beta1/"
-          + "{name=projects/*/locations/*/models/*}:m"
-          + "ergeVersionAliases:\001*\332A\024name,version_ali"
-          + "ases\022\360\001\n\013ExportModel\0223.google.cloud.aipl"
-          + "atform.v1beta1.ExportModelRequest\032\035.goog"
-          + "le.longrunning.Operation\"\214\001\202\323\344\223\002;\"6/v1be"
-          + "ta1/{name=projects/*/locations/*/models/"
-          + "*}:export:\001*\332A\022name,output_config\312A3\n\023Ex"
-          + "portModelResponse\022\034ExportModelOperationM"
-          + "etadata\022\363\001\n\025ImportModelEvaluation\022=.goog"
-          + "le.cloud.aiplatform.v1beta1.ImportModelE"
-          + "valuationRequest\0320.google.cloud.aiplatfo"
-          + "rm.v1beta1.ModelEvaluation\"i\202\323\344\223\002I\"D/v1b"
-          + "eta1/{parent=projects/*/locations/*/mode"
-          + "ls/*}/evaluations:import:\001*\332A\027parent,mod"
-          + "el_evaluation\022\267\002\n BatchImportModelEvalua"
-          + "tionSlices\022H.google.cloud.aiplatform.v1b"
-          + "eta1.BatchImportModelEvaluationSlicesReq"
-          + "uest\032I.google.cloud.aiplatform.v1beta1.B"
-          + "atchImportModelEvaluationSlicesResponse\""
-          + "~\202\323\344\223\002W\"R/v1beta1/{parent=projects/*/loc"
-          + "ations/*/models/*/evaluations/*}/slices:"
-          + "batchImport:\001*\332A\036parent,model_evaluation"
-          + "_slices\022\320\001\n\022GetModelEvaluation\022:.google."
-          + "cloud.aiplatform.v1beta1.GetModelEvaluat"
-          + "ionRequest\0320.google.cloud.aiplatform.v1b"
-          + "eta1.ModelEvaluation\"L\202\323\344\223\002?\022=/v1beta1/{"
-          + "name=projects/*/locations/*/models/*/eva"
-          + "luations/*}\332A\004name\022\343\001\n\024ListModelEvaluati"
-          + "ons\022<.google.cloud.aiplatform.v1beta1.Li"
-          + "stModelEvaluationsRequest\032=.google.cloud"
-          + ".aiplatform.v1beta1.ListModelEvaluations"
-          + "Response\"N\202\323\344\223\002?\022=/v1beta1/{parent=proje"
-          + "cts/*/locations/*/models/*}/evaluations\332"
-          + "A\006parent\022\350\001\n\027GetModelEvaluationSlice\022?.g"
-          + "oogle.cloud.aiplatform.v1beta1.GetModelE"
-          + "valuationSliceRequest\0325.google.cloud.aip"
-          + "latform.v1beta1.ModelEvaluationSlice\"U\202\323"
-          + "\344\223\002H\022F/v1beta1/{name=projects/*/location"
-          + "s/*/models/*/evaluations/*/slices/*}\332A\004n"
-          + "ame\022\373\001\n\031ListModelEvaluationSlices\022A.goog"
-          + "le.cloud.aiplatform.v1beta1.ListModelEva"
-          + "luationSlicesRequest\032B.google.cloud.aipl"
-          + "atform.v1beta1.ListModelEvaluationSlices"
-          + "Response\"W\202\323\344\223\002H\022F/v1beta1/{parent=proje"
+          + "odelB\003\340A\002\022\034\n\017service_account\030\006 \001(\tB\003\340A\001\""
+          + "s\n\034UploadModelOperationMetadata\022S\n\020gener"
+          + "ic_metadata\030\001 \001(\01329.google.cloud.aiplatf"
+          + "orm.v1beta1.GenericOperationMetadata\"i\n\023"
+          + "UploadModelResponse\0223\n\005model\030\001 \001(\tB$\372A!\n"
+          + "\037aiplatform.googleapis.com/Model\022\035\n\020mode"
+          + "l_version_id\030\002 \001(\tB\003\340A\003\"H\n\017GetModelReque"
+          + "st\0225\n\004name\030\001 \001(\tB\'\340A\002\372A!\n\037aiplatform.goo"
+          + "gleapis.com/Model\"\264\001\n\021ListModelsRequest\022"
+          + "9\n\006parent\030\001 \001(\tB)\340A\002\372A#\n!locations.googl"
+          + "eapis.com/Location\022\016\n\006filter\030\002 \001(\t\022\021\n\tpa"
+          + "ge_size\030\003 \001(\005\022\022\n\npage_token\030\004 \001(\t\022-\n\trea"
+          + "d_mask\030\005 \001(\0132\032.google.protobuf.FieldMask"
+          + "\"e\n\022ListModelsResponse\0226\n\006models\030\001 \003(\0132&"
+          + ".google.cloud.aiplatform.v1beta1.Model\022\027"
+          + "\n\017next_page_token\030\002 \001(\t\"\267\001\n\030ListModelVer"
+          + "sionsRequest\0225\n\004name\030\001 \001(\tB\'\340A\002\372A!\n\037aipl"
+          + "atform.googleapis.com/Model\022\021\n\tpage_size"
+          + "\030\002 \001(\005\022\022\n\npage_token\030\003 \001(\t\022\016\n\006filter\030\004 \001"
+          + "(\t\022-\n\tread_mask\030\005 \001(\0132\032.google.protobuf."
+          + "FieldMask\"l\n\031ListModelVersionsResponse\0226"
+          + "\n\006models\030\001 \003(\0132&.google.cloud.aiplatform"
+          + ".v1beta1.Model\022\027\n\017next_page_token\030\002 \001(\t\""
+          + "\206\001\n\022UpdateModelRequest\022:\n\005model\030\001 \001(\0132&."
+          + "google.cloud.aiplatform.v1beta1.ModelB\003\340"
+          + "A\002\0224\n\013update_mask\030\002 \001(\0132\032.google.protobu"
+          + "f.FieldMaskB\003\340A\002\"\226\001\n\037UpdateExplanationDa"
+          + "tasetRequest\0226\n\005model\030\001 \001(\tB\'\340A\002\372A!\n\037aip"
+          + "latform.googleapis.com/Model\022;\n\010examples"
+          + "\030\002 \001(\0132).google.cloud.aiplatform.v1beta1"
+          + ".Examples\"\200\001\n)UpdateExplanationDatasetOp"
+          + "erationMetadata\022S\n\020generic_metadata\030\001 \001("
+          + "\01329.google.cloud.aiplatform.v1beta1.Gene"
+          + "ricOperationMetadata\"K\n\022DeleteModelReque"
+          + "st\0225\n\004name\030\001 \001(\tB\'\340A\002\372A!\n\037aiplatform.goo"
+          + "gleapis.com/Model\"R\n\031DeleteModelVersionR"
+          + "equest\0225\n\004name\030\001 \001(\tB\'\340A\002\372A!\n\037aiplatform"
+          + ".googleapis.com/Model\"q\n\032MergeVersionAli"
+          + "asesRequest\0225\n\004name\030\001 \001(\tB\'\340A\002\372A!\n\037aipla"
+          + "tform.googleapis.com/Model\022\034\n\017version_al"
+          + "iases\030\002 \003(\tB\003\340A\002\"\375\002\n\022ExportModelRequest\022"
+          + "5\n\004name\030\001 \001(\tB\'\340A\002\372A!\n\037aiplatform.google"
+          + "apis.com/Model\022\\\n\routput_config\030\002 \001(\0132@."
+          + "google.cloud.aiplatform.v1beta1.ExportMo"
+          + "delRequest.OutputConfigB\003\340A\002\032\321\001\n\014OutputC"
+          + "onfig\022\030\n\020export_format_id\030\001 \001(\t\022M\n\024artif"
+          + "act_destination\030\003 \001(\0132/.google.cloud.aip"
+          + "latform.v1beta1.GcsDestination\022X\n\021image_"
+          + "destination\030\004 \001(\0132=.google.cloud.aiplatf"
+          + "orm.v1beta1.ContainerRegistryDestination"
+          + "\"\246\002\n\034ExportModelOperationMetadata\022S\n\020gen"
+          + "eric_metadata\030\001 \001(\01329.google.cloud.aipla"
+          + "tform.v1beta1.GenericOperationMetadata\022b"
+          + "\n\013output_info\030\002 \001(\0132H.google.cloud.aipla"
+          + "tform.v1beta1.ExportModelOperationMetada"
+          + "ta.OutputInfoB\003\340A\003\032M\n\nOutputInfo\022 \n\023arti"
+          + "fact_output_uri\030\002 \001(\tB\003\340A\003\022\035\n\020image_outp"
+          + "ut_uri\030\003 \001(\tB\003\340A\003\"\"\n UpdateExplanationDa"
+          + "tasetResponse\"\025\n\023ExportModelResponse\"\250\001\n"
+          + "\034ImportModelEvaluationRequest\0227\n\006parent\030"
+          + "\001 \001(\tB\'\340A\002\372A!\n\037aiplatform.googleapis.com"
+          + "/Model\022O\n\020model_evaluation\030\002 \001(\01320.googl"
+          + "e.cloud.aiplatform.v1beta1.ModelEvaluati"
+          + "onB\003\340A\002\"\311\001\n\'BatchImportModelEvaluationSl"
+          + "icesRequest\022A\n\006parent\030\001 \001(\tB1\340A\002\372A+\n)aip"
+          + "latform.googleapis.com/ModelEvaluation\022["
+          + "\n\027model_evaluation_slices\030\002 \003(\01325.google"
+          + ".cloud.aiplatform.v1beta1.ModelEvaluatio"
+          + "nSliceB\003\340A\002\"Y\n(BatchImportModelEvaluatio"
+          + "nSlicesResponse\022-\n imported_model_evalua"
+          + "tion_slices\030\001 \003(\tB\003\340A\003\"\\\n\031GetModelEvalua"
+          + "tionRequest\022?\n\004name\030\001 \001(\tB1\340A\002\372A+\n)aipla"
+          + "tform.googleapis.com/ModelEvaluation\"\274\001\n"
+          + "\033ListModelEvaluationsRequest\0227\n\006parent\030\001"
+          + " \001(\tB\'\340A\002\372A!\n\037aiplatform.googleapis.com/"
+          + "Model\022\016\n\006filter\030\002 \001(\t\022\021\n\tpage_size\030\003 \001(\005"
+          + "\022\022\n\npage_token\030\004 \001(\t\022-\n\tread_mask\030\005 \001(\0132"
+          + "\032.google.protobuf.FieldMask\"\204\001\n\034ListMode"
+          + "lEvaluationsResponse\022K\n\021model_evaluation"
+          + "s\030\001 \003(\01320.google.cloud.aiplatform.v1beta"
+          + "1.ModelEvaluation\022\027\n\017next_page_token\030\002 \001"
+          + "(\t\"f\n\036GetModelEvaluationSliceRequest\022D\n\004"
+          + "name\030\001 \001(\tB6\340A\002\372A0\n.aiplatform.googleapi"
+          + "s.com/ModelEvaluationSlice\"\313\001\n ListModel"
+          + "EvaluationSlicesRequest\022A\n\006parent\030\001 \001(\tB"
+          + "1\340A\002\372A+\n)aiplatform.googleapis.com/Model"
+          + "Evaluation\022\016\n\006filter\030\002 \001(\t\022\021\n\tpage_size\030"
+          + "\003 \001(\005\022\022\n\npage_token\030\004 \001(\t\022-\n\tread_mask\030\005"
+          + " \001(\0132\032.google.protobuf.FieldMask\"\224\001\n!Lis"
+          + "tModelEvaluationSlicesResponse\022V\n\027model_"
+          + "evaluation_slices\030\001 \003(\01325.google.cloud.a"
+          + "iplatform.v1beta1.ModelEvaluationSlice\022\027"
+          + "\n\017next_page_token\030\002 \001(\t2\354\035\n\014ModelService"
+          + "\022\352\001\n\013UploadModel\0223.google.cloud.aiplatfo"
+          + "rm.v1beta1.UploadModelRequest\032\035.google.l"
+          + "ongrunning.Operation\"\206\001\202\323\344\223\002;\"6/v1beta1/"
+          + "{parent=projects/*/locations/*}/models:u"
+          + "pload:\001*\332A\014parent,model\312A3\n\023UploadModelR"
+          + "esponse\022\034UploadModelOperationMetadata\022\244\001"
+          + "\n\010GetModel\0220.google.cloud.aiplatform.v1b"
+          + "eta1.GetModelRequest\032&.google.cloud.aipl"
+          + "atform.v1beta1.Model\">\202\323\344\223\0021\022//v1beta1/{"
+          + "name=projects/*/locations/*/models/*}\332A\004"
+          + "name\022\267\001\n\nListModels\0222.google.cloud.aipla"
+          + "tform.v1beta1.ListModelsRequest\0323.google"
+          + ".cloud.aiplatform.v1beta1.ListModelsResp"
+          + "onse\"@\202\323\344\223\0021\022//v1beta1/{parent=projects/"
+          + "*/locations/*}/models\332A\006parent\022\327\001\n\021ListM"
+          + "odelVersions\0229.google.cloud.aiplatform.v"
+          + "1beta1.ListModelVersionsRequest\032:.google"
+          + ".cloud.aiplatform.v1beta1.ListModelVersi"
+          + "onsResponse\"K\202\323\344\223\002>\022</v1beta1/{name=proj"
+          + "ects/*/locations/*/models/*}:listVersion"
+          + "s\332A\004name\022\304\001\n\013UpdateModel\0223.google.cloud."
+          + "aiplatform.v1beta1.UpdateModelRequest\032&."
+          + "google.cloud.aiplatform.v1beta1.Model\"X\202"
+          + "\323\344\223\002>25/v1beta1/{model.name=projects/*/l"
+          + "ocations/*/models/*}:\005model\332A\021model,upda"
+          + "te_mask\022\252\002\n\030UpdateExplanationDataset\022@.g"
+          + "oogle.cloud.aiplatform.v1beta1.UpdateExp"
+          + "lanationDatasetRequest\032\035.google.longrunn"
+          + "ing.Operation\"\254\001\202\323\344\223\002N\"I/v1beta1/{model="
+          + "projects/*/locations/*/models/*}:updateE"
+          + "xplanationDataset:\001*\332A\005model\312AM\n UpdateE"
+          + "xplanationDatasetResponse\022)UpdateExplana"
+          + "tionDatasetOperationMetadata\022\324\001\n\013DeleteM"
+          + "odel\0223.google.cloud.aiplatform.v1beta1.D"
+          + "eleteModelRequest\032\035.google.longrunning.O"
+          + "peration\"q\202\323\344\223\0021*//v1beta1/{name=project"
+          + "s/*/locations/*/models/*}\332A\004name\312A0\n\025goo"
+          + "gle.protobuf.Empty\022\027DeleteOperationMetad"
+          + "ata\022\360\001\n\022DeleteModelVersion\022:.google.clou"
+          + "d.aiplatform.v1beta1.DeleteModelVersionR"
+          + "equest\032\035.google.longrunning.Operation\"\177\202"
+          + "\323\344\223\002?*=/v1beta1/{name=projects/*/locatio"
+          + "ns/*/models/*}:deleteVersion\332A\004name\312A0\n\025"
+          + "google.protobuf.Empty\022\027DeleteOperationMe"
+          + "tadata\022\341\001\n\023MergeVersionAliases\022;.google."
+          + "cloud.aiplatform.v1beta1.MergeVersionAli"
+          + "asesRequest\032&.google.cloud.aiplatform.v1"
+          + "beta1.Model\"e\202\323\344\223\002H\"C/v1beta1/{name=proj"
+          + "ects/*/locations/*/models/*}:mergeVersio"
+          + "nAliases:\001*\332A\024name,version_aliases\022\360\001\n\013E"
+          + "xportModel\0223.google.cloud.aiplatform.v1b"
+          + "eta1.ExportModelRequest\032\035.google.longrun"
+          + "ning.Operation\"\214\001\202\323\344\223\002;\"6/v1beta1/{name="
+          + "projects/*/locations/*/models/*}:export:"
+          + "\001*\332A\022name,output_config\312A3\n\023ExportModelR"
+          + "esponse\022\034ExportModelOperationMetadata\022\363\001"
+          + "\n\025ImportModelEvaluation\022=.google.cloud.a"
+          + "iplatform.v1beta1.ImportModelEvaluationR"
+          + "equest\0320.google.cloud.aiplatform.v1beta1"
+          + ".ModelEvaluation\"i\202\323\344\223\002I\"D/v1beta1/{pare"
+          + "nt=projects/*/locations/*/models/*}/eval"
+          + "uations:import:\001*\332A\027parent,model_evaluat"
+          + "ion\022\267\002\n BatchImportModelEvaluationSlices"
+          + "\022H.google.cloud.aiplatform.v1beta1.Batch"
+          + "ImportModelEvaluationSlicesRequest\032I.goo"
+          + "gle.cloud.aiplatform.v1beta1.BatchImport"
+          + "ModelEvaluationSlicesResponse\"~\202\323\344\223\002W\"R/"
+          + "v1beta1/{parent=projects/*/locations/*/m"
+          + "odels/*/evaluations/*}/slices:batchImpor"
+          + "t:\001*\332A\036parent,model_evaluation_slices\022\320\001"
+          + "\n\022GetModelEvaluation\022:.google.cloud.aipl"
+          + "atform.v1beta1.GetModelEvaluationRequest"
+          + "\0320.google.cloud.aiplatform.v1beta1.Model"
+          + "Evaluation\"L\202\323\344\223\002?\022=/v1beta1/{name=proje"
           + "cts/*/locations/*/models/*/evaluations/*"
-          + "}/slices\332A\006parent\032M\312A\031aiplatform.googlea"
-          + "pis.com\322A.https://www.googleapis.com/aut"
-          + "h/cloud-platformB\356\001\n#com.google.cloud.ai"
-          + "platform.v1beta1B\021ModelServiceProtoP\001ZIg"
-          + "oogle.golang.org/genproto/googleapis/clo"
-          + "ud/aiplatform/v1beta1;aiplatform\252\002\037Googl"
-          + "e.Cloud.AIPlatform.V1Beta1\312\002\037Google\\Clou"
-          + "d\\AIPlatform\\V1beta1\352\002\"Google::Cloud::AI"
-          + "Platform::V1beta1b\006proto3"
+          + "}\332A\004name\022\343\001\n\024ListModelEvaluations\022<.goog"
+          + "le.cloud.aiplatform.v1beta1.ListModelEva"
+          + "luationsRequest\032=.google.cloud.aiplatfor"
+          + "m.v1beta1.ListModelEvaluationsResponse\"N"
+          + "\202\323\344\223\002?\022=/v1beta1/{parent=projects/*/loca"
+          + "tions/*/models/*}/evaluations\332A\006parent\022\350"
+          + "\001\n\027GetModelEvaluationSlice\022?.google.clou"
+          + "d.aiplatform.v1beta1.GetModelEvaluationS"
+          + "liceRequest\0325.google.cloud.aiplatform.v1"
+          + "beta1.ModelEvaluationSlice\"U\202\323\344\223\002H\022F/v1b"
+          + "eta1/{name=projects/*/locations/*/models"
+          + "/*/evaluations/*/slices/*}\332A\004name\022\373\001\n\031Li"
+          + "stModelEvaluationSlices\022A.google.cloud.a"
+          + "iplatform.v1beta1.ListModelEvaluationSli"
+          + "cesRequest\032B.google.cloud.aiplatform.v1b"
+          + "eta1.ListModelEvaluationSlicesResponse\"W"
+          + "\202\323\344\223\002H\022F/v1beta1/{parent=projects/*/loca"
+          + "tions/*/models/*/evaluations/*}/slices\332A"
+          + "\006parent\032M\312A\031aiplatform.googleapis.com\322A."
+          + "https://www.googleapis.com/auth/cloud-pl"
+          + "atformB\356\001\n#com.google.cloud.aiplatform.v"
+          + "1beta1B\021ModelServiceProtoP\001ZIgoogle.gola"
+          + "ng.org/genproto/googleapis/cloud/aiplatf"
+          + "orm/v1beta1;aiplatform\252\002\037Google.Cloud.AI"
+          + "Platform.V1Beta1\312\002\037Google\\Cloud\\AIPlatfo"
+          + "rm\\V1beta1\352\002\"Google::Cloud::AIPlatform::"
+          + "V1beta1b\006proto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
@@ -389,7 +390,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_cloud_aiplatform_v1beta1_UploadModelRequest_descriptor,
             new java.lang.String[] {
-              "Parent", "ParentModel", "ModelId", "Model",
+              "Parent", "ParentModel", "ModelId", "Model", "ServiceAccount",
             });
     internal_static_google_cloud_aiplatform_v1beta1_UploadModelOperationMetadata_descriptor =
         getDescriptor().getMessageTypes().get(1);
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/UploadModelRequest.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/UploadModelRequest.java
index dd8b90fd0fcb..542a9d8f63f2 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/UploadModelRequest.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/UploadModelRequest.java
@@ -41,6 +41,7 @@ private UploadModelRequest() {
     parent_ = "";
     parentModel_ = "";
     modelId_ = "";
+    serviceAccount_ = "";
   }
 
   @java.lang.Override
@@ -282,6 +283,67 @@ public com.google.cloud.aiplatform.v1beta1.ModelOrBuilder getModelOrBuilder() {
     return getModel();
   }
 
+  public static final int SERVICE_ACCOUNT_FIELD_NUMBER = 6;
+  private volatile java.lang.Object serviceAccount_;
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The user-provided custom service account to use to do the model
+   * upload. If empty, [Vertex AI Service
+   * Agent](https://cloud.google.com/vertex-ai/docs/general/access-control#service-agents)
+   * will be used. Users uploading the Model must have the
+   * `iam.serviceAccounts.actAs` permission on this service account. Also, this
+   * account must belong to the project specified in the `parent` field and have
+   * all necessary read permissions.
+   * </pre>
+   *
+   * <code>string service_account = 6 [(.google.api.field_behavior) = OPTIONAL];</code>
+   *
+   * @return The serviceAccount.
+   */
+  @java.lang.Override
+  public java.lang.String getServiceAccount() {
+    java.lang.Object ref = serviceAccount_;
+    if (ref instanceof java.lang.String) {
+      return (java.lang.String) ref;
+    } else {
+      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+      java.lang.String s = bs.toStringUtf8();
+      serviceAccount_ = s;
+      return s;
+    }
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The user-provided custom service account to use to do the model
+   * upload. If empty, [Vertex AI Service
+   * Agent](https://cloud.google.com/vertex-ai/docs/general/access-control#service-agents)
+   * will be used. Users uploading the Model must have the
+   * `iam.serviceAccounts.actAs` permission on this service account. Also, this
+   * account must belong to the project specified in the `parent` field and have
+   * all necessary read permissions.
+   * </pre>
+   *
+   * <code>string service_account = 6 [(.google.api.field_behavior) = OPTIONAL];</code>
+   *
+   * @return The bytes for serviceAccount.
+   */
+  @java.lang.Override
+  public com.google.protobuf.ByteString getServiceAccountBytes() {
+    java.lang.Object ref = serviceAccount_;
+    if (ref instanceof java.lang.String) {
+      com.google.protobuf.ByteString b =
+          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+      serviceAccount_ = b;
+      return b;
+    } else {
+      return (com.google.protobuf.ByteString) ref;
+    }
+  }
+
   private byte memoizedIsInitialized = -1;
 
   @java.lang.Override
@@ -308,6 +370,9 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(modelId_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 5, modelId_);
     }
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(serviceAccount_)) {
+      com.google.protobuf.GeneratedMessageV3.writeString(output, 6, serviceAccount_);
+    }
     getUnknownFields().writeTo(output);
   }
 
@@ -329,6 +394,9 @@ public int getSerializedSize() {
     if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(modelId_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(5, modelId_);
     }
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(serviceAccount_)) {
+      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(6, serviceAccount_);
+    }
     size += getUnknownFields().getSerializedSize();
     memoizedSize = size;
     return size;
@@ -352,6 +420,7 @@ public boolean equals(final java.lang.Object obj) {
     if (hasModel()) {
       if (!getModel().equals(other.getModel())) return false;
     }
+    if (!getServiceAccount().equals(other.getServiceAccount())) return false;
     if (!getUnknownFields().equals(other.getUnknownFields())) return false;
     return true;
   }
@@ -373,6 +442,8 @@ public int hashCode() {
       hash = (37 * hash) + MODEL_FIELD_NUMBER;
       hash = (53 * hash) + getModel().hashCode();
     }
+    hash = (37 * hash) + SERVICE_ACCOUNT_FIELD_NUMBER;
+    hash = (53 * hash) + getServiceAccount().hashCode();
     hash = (29 * hash) + getUnknownFields().hashCode();
     memoizedHashCode = hash;
     return hash;
@@ -524,6 +595,8 @@ public Builder clear() {
         model_ = null;
         modelBuilder_ = null;
       }
+      serviceAccount_ = "";
+
       return this;
     }
 
@@ -559,6 +632,7 @@ public com.google.cloud.aiplatform.v1beta1.UploadModelRequest buildPartial() {
       } else {
         result.model_ = modelBuilder_.build();
       }
+      result.serviceAccount_ = serviceAccount_;
       onBuilt();
       return result;
     }
@@ -624,6 +698,10 @@ public Builder mergeFrom(com.google.cloud.aiplatform.v1beta1.UploadModelRequest
       if (other.hasModel()) {
         mergeModel(other.getModel());
       }
+      if (!other.getServiceAccount().isEmpty()) {
+        serviceAccount_ = other.serviceAccount_;
+        onChanged();
+      }
       this.mergeUnknownFields(other.getUnknownFields());
       onChanged();
       return this;
@@ -674,6 +752,12 @@ public Builder mergeFrom(
 
                 break;
               } // case 42
+            case 50:
+              {
+                serviceAccount_ = input.readStringRequireUtf8();
+
+                break;
+              } // case 50
             default:
               {
                 if (!super.parseUnknownField(input, extensionRegistry, tag)) {
@@ -1247,6 +1331,142 @@ public com.google.cloud.aiplatform.v1beta1.ModelOrBuilder getModelOrBuilder() {
       return modelBuilder_;
     }
 
+    private java.lang.Object serviceAccount_ = "";
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The user-provided custom service account to use to do the model
+     * upload. If empty, [Vertex AI Service
+     * Agent](https://cloud.google.com/vertex-ai/docs/general/access-control#service-agents)
+     * will be used. Users uploading the Model must have the
+     * `iam.serviceAccounts.actAs` permission on this service account. Also, this
+     * account must belong to the project specified in the `parent` field and have
+     * all necessary read permissions.
+     * </pre>
+     *
+     * <code>string service_account = 6 [(.google.api.field_behavior) = OPTIONAL];</code>
+     *
+     * @return The serviceAccount.
+     */
+    public java.lang.String getServiceAccount() {
+      java.lang.Object ref = serviceAccount_;
+      if (!(ref instanceof java.lang.String)) {
+        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        serviceAccount_ = s;
+        return s;
+      } else {
+        return (java.lang.String) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The user-provided custom service account to use to do the model
+     * upload. If empty, [Vertex AI Service
+     * Agent](https://cloud.google.com/vertex-ai/docs/general/access-control#service-agents)
+     * will be used. Users uploading the Model must have the
+     * `iam.serviceAccounts.actAs` permission on this service account. Also, this
+     * account must belong to the project specified in the `parent` field and have
+     * all necessary read permissions.
+     * </pre>
+     *
+     * <code>string service_account = 6 [(.google.api.field_behavior) = OPTIONAL];</code>
+     *
+     * @return The bytes for serviceAccount.
+     */
+    public com.google.protobuf.ByteString getServiceAccountBytes() {
+      java.lang.Object ref = serviceAccount_;
+      if (ref instanceof String) {
+        com.google.protobuf.ByteString b =
+            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+        serviceAccount_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The user-provided custom service account to use to do the model
+     * upload. If empty, [Vertex AI Service
+     * Agent](https://cloud.google.com/vertex-ai/docs/general/access-control#service-agents)
+     * will be used. Users uploading the Model must have the
+     * `iam.serviceAccounts.actAs` permission on this service account. Also, this
+     * account must belong to the project specified in the `parent` field and have
+     * all necessary read permissions.
+     * </pre>
+     *
+     * <code>string service_account = 6 [(.google.api.field_behavior) = OPTIONAL];</code>
+     *
+     * @param value The serviceAccount to set.
+     * @return This builder for chaining.
+     */
+    public Builder setServiceAccount(java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+
+      serviceAccount_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The user-provided custom service account to use to do the model
+     * upload. If empty, [Vertex AI Service
+     * Agent](https://cloud.google.com/vertex-ai/docs/general/access-control#service-agents)
+     * will be used. Users uploading the Model must have the
+     * `iam.serviceAccounts.actAs` permission on this service account. Also, this
+     * account must belong to the project specified in the `parent` field and have
+     * all necessary read permissions.
+     * </pre>
+     *
+     * <code>string service_account = 6 [(.google.api.field_behavior) = OPTIONAL];</code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearServiceAccount() {
+
+      serviceAccount_ = getDefaultInstance().getServiceAccount();
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The user-provided custom service account to use to do the model
+     * upload. If empty, [Vertex AI Service
+     * Agent](https://cloud.google.com/vertex-ai/docs/general/access-control#service-agents)
+     * will be used. Users uploading the Model must have the
+     * `iam.serviceAccounts.actAs` permission on this service account. Also, this
+     * account must belong to the project specified in the `parent` field and have
+     * all necessary read permissions.
+     * </pre>
+     *
+     * <code>string service_account = 6 [(.google.api.field_behavior) = OPTIONAL];</code>
+     *
+     * @param value The bytes for serviceAccount to set.
+     * @return This builder for chaining.
+     */
+    public Builder setServiceAccountBytes(com.google.protobuf.ByteString value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      checkByteStringIsUtf8(value);
+
+      serviceAccount_ = value;
+      onChanged();
+      return this;
+    }
+
     @java.lang.Override
     public final Builder setUnknownFields(final com.google.protobuf.UnknownFieldSet unknownFields) {
       return super.setUnknownFields(unknownFields);
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/UploadModelRequestOrBuilder.java b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/UploadModelRequestOrBuilder.java
index 3ac190d13575..166bda515b37 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/UploadModelRequestOrBuilder.java
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/java/com/google/cloud/aiplatform/v1beta1/UploadModelRequestOrBuilder.java
@@ -152,4 +152,41 @@ public interface UploadModelRequestOrBuilder
    * </code>
    */
   com.google.cloud.aiplatform.v1beta1.ModelOrBuilder getModelOrBuilder();
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The user-provided custom service account to use to do the model
+   * upload. If empty, [Vertex AI Service
+   * Agent](https://cloud.google.com/vertex-ai/docs/general/access-control#service-agents)
+   * will be used. Users uploading the Model must have the
+   * `iam.serviceAccounts.actAs` permission on this service account. Also, this
+   * account must belong to the project specified in the `parent` field and have
+   * all necessary read permissions.
+   * </pre>
+   *
+   * <code>string service_account = 6 [(.google.api.field_behavior) = OPTIONAL];</code>
+   *
+   * @return The serviceAccount.
+   */
+  java.lang.String getServiceAccount();
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The user-provided custom service account to use to do the model
+   * upload. If empty, [Vertex AI Service
+   * Agent](https://cloud.google.com/vertex-ai/docs/general/access-control#service-agents)
+   * will be used. Users uploading the Model must have the
+   * `iam.serviceAccounts.actAs` permission on this service account. Also, this
+   * account must belong to the project specified in the `parent` field and have
+   * all necessary read permissions.
+   * </pre>
+   *
+   * <code>string service_account = 6 [(.google.api.field_behavior) = OPTIONAL];</code>
+   *
+   * @return The bytes for serviceAccount.
+   */
+  com.google.protobuf.ByteString getServiceAccountBytes();
 }
diff --git a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/proto/google/cloud/aiplatform/v1beta1/model_service.proto b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/proto/google/cloud/aiplatform/v1beta1/model_service.proto
index 1af9d4b48fef..9fad50db7e71 100644
--- a/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/proto/google/cloud/aiplatform/v1beta1/model_service.proto
+++ b/java-aiplatform/proto-google-cloud-aiplatform-v1beta1/src/main/proto/google/cloud/aiplatform/v1beta1/model_service.proto
@@ -232,6 +232,15 @@ message UploadModelRequest {
 
   // Required. The Model to create.
   Model model = 2 [(google.api.field_behavior) = REQUIRED];
+
+  // Optional. The user-provided custom service account to use to do the model
+  // upload. If empty, [Vertex AI Service
+  // Agent](https://cloud.google.com/vertex-ai/docs/general/access-control#service-agents)
+  // will be used. Users uploading the Model must have the
+  // `iam.serviceAccounts.actAs` permission on this service account. Also, this
+  // account must belong to the project specified in the `parent` field and have
+  // all necessary read permissions.
+  string service_account = 6 [(google.api.field_behavior) = OPTIONAL];
 }
 
 // Details of [ModelService.UploadModel][google.cloud.aiplatform.v1beta1.ModelService.UploadModel] operation.