diff --git a/apis/Google.Cloud.OsLogin.V1/Google.Cloud.OsLogin.V1.GeneratedSnippets/OsLoginServiceClient.ImportSshPublicKeyRequestObjectAsyncSnippet.g.cs b/apis/Google.Cloud.OsLogin.V1/Google.Cloud.OsLogin.V1.GeneratedSnippets/OsLoginServiceClient.ImportSshPublicKeyRequestObjectAsyncSnippet.g.cs
index 1c0b8c3a7863..88ca56dcb8fa 100644
--- a/apis/Google.Cloud.OsLogin.V1/Google.Cloud.OsLogin.V1.GeneratedSnippets/OsLoginServiceClient.ImportSshPublicKeyRequestObjectAsyncSnippet.g.cs
+++ b/apis/Google.Cloud.OsLogin.V1/Google.Cloud.OsLogin.V1.GeneratedSnippets/OsLoginServiceClient.ImportSshPublicKeyRequestObjectAsyncSnippet.g.cs
@@ -41,6 +41,7 @@ public async Task ImportSshPublicKeyRequestObjectAsync()
                 ParentAsUserName = UserName.FromUser("[USER]"),
                 SshPublicKey = new SshPublicKey(),
                 ProjectId = "",
+                Regions = { "", },
             };
             // Make the request
             ImportSshPublicKeyResponse response = await osLoginServiceClient.ImportSshPublicKeyAsync(request);
diff --git a/apis/Google.Cloud.OsLogin.V1/Google.Cloud.OsLogin.V1.GeneratedSnippets/OsLoginServiceClient.ImportSshPublicKeyRequestObjectSnippet.g.cs b/apis/Google.Cloud.OsLogin.V1/Google.Cloud.OsLogin.V1.GeneratedSnippets/OsLoginServiceClient.ImportSshPublicKeyRequestObjectSnippet.g.cs
index f505ab2ed702..66c557c65b18 100644
--- a/apis/Google.Cloud.OsLogin.V1/Google.Cloud.OsLogin.V1.GeneratedSnippets/OsLoginServiceClient.ImportSshPublicKeyRequestObjectSnippet.g.cs
+++ b/apis/Google.Cloud.OsLogin.V1/Google.Cloud.OsLogin.V1.GeneratedSnippets/OsLoginServiceClient.ImportSshPublicKeyRequestObjectSnippet.g.cs
@@ -40,6 +40,7 @@ public void ImportSshPublicKeyRequestObject()
                 ParentAsUserName = UserName.FromUser("[USER]"),
                 SshPublicKey = new SshPublicKey(),
                 ProjectId = "",
+                Regions = { "", },
             };
             // Make the request
             ImportSshPublicKeyResponse response = osLoginServiceClient.ImportSshPublicKey(request);
diff --git a/apis/Google.Cloud.OsLogin.V1/Google.Cloud.OsLogin.V1.GeneratedSnippets/snippet_metadata_google.cloud.oslogin.v1.json b/apis/Google.Cloud.OsLogin.V1/Google.Cloud.OsLogin.V1.GeneratedSnippets/snippet_metadata_google.cloud.oslogin.v1.json
index de68af231650..12deb198d8f0 100644
--- a/apis/Google.Cloud.OsLogin.V1/Google.Cloud.OsLogin.V1.GeneratedSnippets/snippet_metadata_google.cloud.oslogin.v1.json
+++ b/apis/Google.Cloud.OsLogin.V1/Google.Cloud.OsLogin.V1.GeneratedSnippets/snippet_metadata_google.cloud.oslogin.v1.json
@@ -1493,12 +1493,12 @@
       "segments": [
         {
           "start": 20,
-          "end": 47,
+          "end": 48,
           "type": "FULL"
         },
         {
           "start": 35,
-          "end": 45,
+          "end": 46,
           "type": "SHORT"
         }
       ]
@@ -1542,12 +1542,12 @@
       "segments": [
         {
           "start": 20,
-          "end": 48,
+          "end": 49,
           "type": "FULL"
         },
         {
           "start": 36,
-          "end": 46,
+          "end": 47,
           "type": "SHORT"
         }
       ]
diff --git a/apis/Google.Cloud.OsLogin.V1/Google.Cloud.OsLogin.V1.Snippets/OsLoginServiceClientSnippets.g.cs b/apis/Google.Cloud.OsLogin.V1/Google.Cloud.OsLogin.V1.Snippets/OsLoginServiceClientSnippets.g.cs
index b38f1915c58a..7d5d7967aef0 100644
--- a/apis/Google.Cloud.OsLogin.V1/Google.Cloud.OsLogin.V1.Snippets/OsLoginServiceClientSnippets.g.cs
+++ b/apis/Google.Cloud.OsLogin.V1/Google.Cloud.OsLogin.V1.Snippets/OsLoginServiceClientSnippets.g.cs
@@ -481,6 +481,7 @@ public void ImportSshPublicKeyRequestObject()
                 ParentAsUserName = UserName.FromUser("[USER]"),
                 SshPublicKey = new SshPublicKey(),
                 ProjectId = "",
+                Regions = { "", },
             };
             // Make the request
             ImportSshPublicKeyResponse response = osLoginServiceClient.ImportSshPublicKey(request);
@@ -500,6 +501,7 @@ public async Task ImportSshPublicKeyRequestObjectAsync()
                 ParentAsUserName = UserName.FromUser("[USER]"),
                 SshPublicKey = new SshPublicKey(),
                 ProjectId = "",
+                Regions = { "", },
             };
             // Make the request
             ImportSshPublicKeyResponse response = await osLoginServiceClient.ImportSshPublicKeyAsync(request);
diff --git a/apis/Google.Cloud.OsLogin.V1/Google.Cloud.OsLogin.V1/Oslogin.g.cs b/apis/Google.Cloud.OsLogin.V1/Google.Cloud.OsLogin.V1/Oslogin.g.cs
index f7e6c5189543..ba014bdeb655 100644
--- a/apis/Google.Cloud.OsLogin.V1/Google.Cloud.OsLogin.V1/Oslogin.g.cs
+++ b/apis/Google.Cloud.OsLogin.V1/Google.Cloud.OsLogin.V1/Oslogin.g.cs
@@ -48,57 +48,58 @@ public static partial class OsloginReflection {
             "CUIr4EEC+kElEiNvc2xvZ2luLmdvb2dsZWFwaXMuY29tL1Bvc2l4QWNjb3Vu",
             "dBISCgpwcm9qZWN0X2lkGAIgASgJEhEKCXN5c3RlbV9pZBgDIAEoCSJTChZH",
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-            "b3Nsb2dpbi5nb29nbGVhcGlzLmNvbS9Tc2hQdWJsaWNLZXkitAEKGUltcG9y",
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             "dFNzaFB1YmxpY0tleVJlcXVlc3QSOwoGcGFyZW50GAEgASgJQivgQQL6QSUS",
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             "dWJsaWNfa2V5GAIgASgLMikuZ29vZ2xlLmNsb3VkLm9zbG9naW4uY29tbW9u",
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-            "Z2luLlYxygIXR29vZ2xlXENsb3VkXE9zTG9naW5cVjHqAhpHb29nbGU6OkNs",
-            "b3VkOjpPc0xvZ2luOjpWMWIGcHJvdG8z"));
+            "LlNzaFB1YmxpY0tleUID4EEBEhIKCnByb2plY3RfaWQYAyABKAkSFAoHcmVn",
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+            "b2dsZWFwaXMuY29tL2F1dGgvY29tcHV0ZS5yZWFkb25seUK1AQobY29tLmdv",
+            "b2dsZS5jbG91ZC5vc2xvZ2luLnYxQgxPc0xvZ2luUHJvdG9QAVo1Y2xvdWQu",
+            "Z29vZ2xlLmNvbS9nby9vc2xvZ2luL2FwaXYxL29zbG9naW5wYjtvc2xvZ2lu",
+            "cGKqAhdHb29nbGUuQ2xvdWQuT3NMb2dpbi5WMcoCF0dvb2dsZVxDbG91ZFxP",
+            "c0xvZ2luXFYx6gIaR29vZ2xlOjpDbG91ZDo6T3NMb2dpbjo6VjFiBnByb3Rv",
+            "Mw=="));
       descriptor = pbr::FileDescriptor.FromGeneratedCode(descriptorData,
           new pbr::FileDescriptor[] { global::Google.Api.AnnotationsReflection.Descriptor, global::Google.Api.ClientReflection.Descriptor, global::Google.Api.FieldBehaviorReflection.Descriptor, global::Google.Api.ResourceReflection.Descriptor, global::Google.Cloud.OsLogin.Common.CommonReflection.Descriptor, global::Google.Protobuf.WellKnownTypes.EmptyReflection.Descriptor, global::Google.Protobuf.WellKnownTypes.FieldMaskReflection.Descriptor, },
           new pbr::GeneratedClrTypeInfo(null, null, new pbr::GeneratedClrTypeInfo[] {
@@ -108,7 +109,7 @@ public static partial class OsloginReflection {
             new pbr::GeneratedClrTypeInfo(typeof(global::Google.Cloud.OsLogin.V1.DeleteSshPublicKeyRequest), global::Google.Cloud.OsLogin.V1.DeleteSshPublicKeyRequest.Parser, new[]{ "Name" }, null, null, null, null),
             new pbr::GeneratedClrTypeInfo(typeof(global::Google.Cloud.OsLogin.V1.GetLoginProfileRequest), global::Google.Cloud.OsLogin.V1.GetLoginProfileRequest.Parser, new[]{ "Name", "ProjectId", "SystemId" }, null, null, null, null),
             new pbr::GeneratedClrTypeInfo(typeof(global::Google.Cloud.OsLogin.V1.GetSshPublicKeyRequest), global::Google.Cloud.OsLogin.V1.GetSshPublicKeyRequest.Parser, new[]{ "Name" }, null, null, null, null),
-            new pbr::GeneratedClrTypeInfo(typeof(global::Google.Cloud.OsLogin.V1.ImportSshPublicKeyRequest), global::Google.Cloud.OsLogin.V1.ImportSshPublicKeyRequest.Parser, new[]{ "Parent", "SshPublicKey", "ProjectId" }, null, null, null, null),
+            new pbr::GeneratedClrTypeInfo(typeof(global::Google.Cloud.OsLogin.V1.ImportSshPublicKeyRequest), global::Google.Cloud.OsLogin.V1.ImportSshPublicKeyRequest.Parser, new[]{ "Parent", "SshPublicKey", "ProjectId", "Regions" }, null, null, null, null),
             new pbr::GeneratedClrTypeInfo(typeof(global::Google.Cloud.OsLogin.V1.ImportSshPublicKeyResponse), global::Google.Cloud.OsLogin.V1.ImportSshPublicKeyResponse.Parser, new[]{ "LoginProfile", "Details" }, null, null, null, null),
             new pbr::GeneratedClrTypeInfo(typeof(global::Google.Cloud.OsLogin.V1.UpdateSshPublicKeyRequest), global::Google.Cloud.OsLogin.V1.UpdateSshPublicKeyRequest.Parser, new[]{ "Name", "SshPublicKey", "UpdateMask" }, null, null, null, null)
           }));
@@ -1521,6 +1522,7 @@ public sealed partial class ImportSshPublicKeyRequest : pb::IMessage<ImportSshPu
       parent_ = other.parent_;
       sshPublicKey_ = other.sshPublicKey_ != null ? other.sshPublicKey_.Clone() : null;
       projectId_ = other.projectId_;
+      regions_ = other.regions_.Clone();
       _unknownFields = pb::UnknownFieldSet.Clone(other._unknownFields);
     }
 
@@ -1575,6 +1577,22 @@ public sealed partial class ImportSshPublicKeyRequest : pb::IMessage<ImportSshPu
       }
     }
 
+    /// <summary>Field number for the "regions" field.</summary>
+    public const int RegionsFieldNumber = 5;
+    private static readonly pb::FieldCodec<string> _repeated_regions_codec
+        = pb::FieldCodec.ForString(42);
+    private readonly pbc::RepeatedField<string> regions_ = new pbc::RepeatedField<string>();
+    /// <summary>
+    /// Optional. The regions to which to assert that the key was written.
+    /// If unspecified, defaults to all regions.
+    /// Regions are listed at https://cloud.google.com/about/locations#region.
+    /// </summary>
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
+    public pbc::RepeatedField<string> Regions {
+      get { return regions_; }
+    }
+
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     [global::System.CodeDom.Compiler.GeneratedCode("protoc", null)]
     public override bool Equals(object other) {
@@ -1593,6 +1611,7 @@ public sealed partial class ImportSshPublicKeyRequest : pb::IMessage<ImportSshPu
       if (Parent != other.Parent) return false;
       if (!object.Equals(SshPublicKey, other.SshPublicKey)) return false;
       if (ProjectId != other.ProjectId) return false;
+      if(!regions_.Equals(other.regions_)) return false;
       return Equals(_unknownFields, other._unknownFields);
     }
 
@@ -1603,6 +1622,7 @@ public sealed partial class ImportSshPublicKeyRequest : pb::IMessage<ImportSshPu
       if (Parent.Length != 0) hash ^= Parent.GetHashCode();
       if (sshPublicKey_ != null) hash ^= SshPublicKey.GetHashCode();
       if (ProjectId.Length != 0) hash ^= ProjectId.GetHashCode();
+      hash ^= regions_.GetHashCode();
       if (_unknownFields != null) {
         hash ^= _unknownFields.GetHashCode();
       }
@@ -1633,6 +1653,7 @@ public sealed partial class ImportSshPublicKeyRequest : pb::IMessage<ImportSshPu
         output.WriteRawTag(26);
         output.WriteString(ProjectId);
       }
+      regions_.WriteTo(output, _repeated_regions_codec);
       if (_unknownFields != null) {
         _unknownFields.WriteTo(output);
       }
@@ -1655,6 +1676,7 @@ public sealed partial class ImportSshPublicKeyRequest : pb::IMessage<ImportSshPu
         output.WriteRawTag(26);
         output.WriteString(ProjectId);
       }
+      regions_.WriteTo(ref output, _repeated_regions_codec);
       if (_unknownFields != null) {
         _unknownFields.WriteTo(ref output);
       }
@@ -1674,6 +1696,7 @@ public sealed partial class ImportSshPublicKeyRequest : pb::IMessage<ImportSshPu
       if (ProjectId.Length != 0) {
         size += 1 + pb::CodedOutputStream.ComputeStringSize(ProjectId);
       }
+      size += regions_.CalculateSize(_repeated_regions_codec);
       if (_unknownFields != null) {
         size += _unknownFields.CalculateSize();
       }
@@ -1698,6 +1721,7 @@ public sealed partial class ImportSshPublicKeyRequest : pb::IMessage<ImportSshPu
       if (other.ProjectId.Length != 0) {
         ProjectId = other.ProjectId;
       }
+      regions_.Add(other.regions_);
       _unknownFields = pb::UnknownFieldSet.MergeFrom(_unknownFields, other._unknownFields);
     }
 
@@ -1728,6 +1752,10 @@ public sealed partial class ImportSshPublicKeyRequest : pb::IMessage<ImportSshPu
             ProjectId = input.ReadString();
             break;
           }
+          case 42: {
+            regions_.AddEntriesFrom(input, _repeated_regions_codec);
+            break;
+          }
         }
       }
     #endif
@@ -1758,6 +1786,10 @@ public sealed partial class ImportSshPublicKeyRequest : pb::IMessage<ImportSshPu
             ProjectId = input.ReadString();
             break;
           }
+          case 42: {
+            regions_.AddEntriesFrom(ref input, _repeated_regions_codec);
+            break;
+          }
         }
       }
     }