diff --git a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/CloudBillingClient.java b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/CloudBillingClient.java
index e92d5d9a039..e2ed2bcb4a3 100644
--- a/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/CloudBillingClient.java
+++ b/java-billing/google-cloud-billing/src/main/java/com/google/cloud/billing/v1/CloudBillingClient.java
@@ -1143,6 +1143,7 @@ public final Policy setIamPolicy(String resource, Policy policy) {
    *       SetIamPolicyRequest.newBuilder()
    *           .setResource(BillingAccountName.of("[BILLING_ACCOUNT]").toString())
    *           .setPolicy(Policy.newBuilder().build())
+   *           .setUpdateMask(FieldMask.newBuilder().build())
    *           .build();
    *   Policy response = cloudBillingClient.setIamPolicy(request);
    * }
@@ -1170,6 +1171,7 @@ public final Policy setIamPolicy(SetIamPolicyRequest request) {
    *       SetIamPolicyRequest.newBuilder()
    *           .setResource(BillingAccountName.of("[BILLING_ACCOUNT]").toString())
    *           .setPolicy(Policy.newBuilder().build())
+   *           .setUpdateMask(FieldMask.newBuilder().build())
    *           .build();
    *   ApiFuture<Policy> future = cloudBillingClient.setIamPolicyCallable().futureCall(request);
    *   // Do something.
diff --git a/java-billing/google-cloud-billing/src/test/java/com/google/cloud/billing/v1/CloudBillingClientTest.java b/java-billing/google-cloud-billing/src/test/java/com/google/cloud/billing/v1/CloudBillingClientTest.java
index 484e3d3ae47..527bc071abb 100644
--- a/java-billing/google-cloud-billing/src/test/java/com/google/cloud/billing/v1/CloudBillingClientTest.java
+++ b/java-billing/google-cloud-billing/src/test/java/com/google/cloud/billing/v1/CloudBillingClientTest.java
@@ -28,6 +28,7 @@
 import com.google.api.gax.rpc.InvalidArgumentException;
 import com.google.api.resourcenames.ResourceName;
 import com.google.common.collect.Lists;
+import com.google.iam.v1.AuditConfig;
 import com.google.iam.v1.Binding;
 import com.google.iam.v1.GetIamPolicyRequest;
 import com.google.iam.v1.Policy;
@@ -531,6 +532,7 @@ public void getIamPolicyTest() throws Exception {
         Policy.newBuilder()
             .setVersion(351608024)
             .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
             .setEtag(ByteString.EMPTY)
             .build();
     mockCloudBilling.addResponse(expectedResponse);
@@ -571,6 +573,7 @@ public void getIamPolicyTest2() throws Exception {
         Policy.newBuilder()
             .setVersion(351608024)
             .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
             .setEtag(ByteString.EMPTY)
             .build();
     mockCloudBilling.addResponse(expectedResponse);
@@ -611,6 +614,7 @@ public void setIamPolicyTest() throws Exception {
         Policy.newBuilder()
             .setVersion(351608024)
             .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
             .setEtag(ByteString.EMPTY)
             .build();
     mockCloudBilling.addResponse(expectedResponse);
@@ -654,6 +658,7 @@ public void setIamPolicyTest2() throws Exception {
         Policy.newBuilder()
             .setVersion(351608024)
             .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
             .setEtag(ByteString.EMPTY)
             .build();
     mockCloudBilling.addResponse(expectedResponse);
diff --git a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/AggregationInfo.java b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/AggregationInfo.java
index 35a4e973c56..62063a256b7 100644
--- a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/AggregationInfo.java
+++ b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/AggregationInfo.java
@@ -101,6 +101,8 @@ private AggregationInfo(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/BillingAccount.java b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/BillingAccount.java
index 720c011f3cf..ee1c13f9c5d 100644
--- a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/BillingAccount.java
+++ b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/BillingAccount.java
@@ -110,6 +110,8 @@ private BillingAccount(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/Category.java b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/Category.java
index ca1ad742134..025c36b55cb 100644
--- a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/Category.java
+++ b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/Category.java
@@ -112,6 +112,8 @@ private Category(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/CreateBillingAccountRequest.java b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/CreateBillingAccountRequest.java
index 839e5b81333..29686a14be3 100644
--- a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/CreateBillingAccountRequest.java
+++ b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/CreateBillingAccountRequest.java
@@ -95,6 +95,8 @@ private CreateBillingAccountRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/GetBillingAccountRequest.java b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/GetBillingAccountRequest.java
index 79b2d9069ce..618b11cd2ee 100644
--- a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/GetBillingAccountRequest.java
+++ b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/GetBillingAccountRequest.java
@@ -88,6 +88,8 @@ private GetBillingAccountRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/GetProjectBillingInfoRequest.java b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/GetProjectBillingInfoRequest.java
index c8d4df21883..8a989feca78 100644
--- a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/GetProjectBillingInfoRequest.java
+++ b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/GetProjectBillingInfoRequest.java
@@ -88,6 +88,8 @@ private GetProjectBillingInfoRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListBillingAccountsRequest.java b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListBillingAccountsRequest.java
index d131181b2c0..94e813ff426 100644
--- a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListBillingAccountsRequest.java
+++ b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListBillingAccountsRequest.java
@@ -101,6 +101,8 @@ private ListBillingAccountsRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListBillingAccountsResponse.java b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListBillingAccountsResponse.java
index fad5cade51e..626e84d7aa2 100644
--- a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListBillingAccountsResponse.java
+++ b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListBillingAccountsResponse.java
@@ -102,6 +102,8 @@ private ListBillingAccountsResponse(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListProjectBillingInfoRequest.java b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListProjectBillingInfoRequest.java
index d0ce641271b..9844529330d 100644
--- a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListProjectBillingInfoRequest.java
+++ b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListProjectBillingInfoRequest.java
@@ -101,6 +101,8 @@ private ListProjectBillingInfoRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListProjectBillingInfoResponse.java b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListProjectBillingInfoResponse.java
index 60ae67d7995..fa51e9b18d5 100644
--- a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListProjectBillingInfoResponse.java
+++ b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListProjectBillingInfoResponse.java
@@ -103,6 +103,8 @@ private ListProjectBillingInfoResponse(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListServicesRequest.java b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListServicesRequest.java
index da74ccb1e45..5fcef038fc6 100644
--- a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListServicesRequest.java
+++ b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListServicesRequest.java
@@ -93,6 +93,8 @@ private ListServicesRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListServicesResponse.java b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListServicesResponse.java
index f2c4357f137..00f6aa4563c 100644
--- a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListServicesResponse.java
+++ b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListServicesResponse.java
@@ -101,6 +101,8 @@ private ListServicesResponse(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListSkusRequest.java b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListSkusRequest.java
index 7b93d710776..a74bdaf9666 100644
--- a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListSkusRequest.java
+++ b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListSkusRequest.java
@@ -139,6 +139,8 @@ private ListSkusRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListSkusResponse.java b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListSkusResponse.java
index 3b074d213ce..cb3cda44666 100644
--- a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListSkusResponse.java
+++ b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ListSkusResponse.java
@@ -100,6 +100,8 @@ private ListSkusResponse(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/PricingExpression.java b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/PricingExpression.java
index 2731b86da32..4943bb00de4 100644
--- a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/PricingExpression.java
+++ b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/PricingExpression.java
@@ -145,6 +145,8 @@ private PricingExpression(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
@@ -309,6 +311,8 @@ private TierRate(
         }
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
         throw e.setUnfinishedMessage(this);
+      } catch (com.google.protobuf.UninitializedMessageException e) {
+        throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
       } catch (java.io.IOException e) {
         throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
       } finally {
@@ -415,7 +419,7 @@ public final boolean isInitialized() {
 
     @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-      if (startUsageAmount_ != 0D) {
+      if (java.lang.Double.doubleToRawLongBits(startUsageAmount_) != 0) {
         output.writeDouble(1, startUsageAmount_);
       }
       if (unitPrice_ != null) {
@@ -430,7 +434,7 @@ public int getSerializedSize() {
       if (size != -1) return size;
 
       size = 0;
-      if (startUsageAmount_ != 0D) {
+      if (java.lang.Double.doubleToRawLongBits(startUsageAmount_) != 0) {
         size += com.google.protobuf.CodedOutputStream.computeDoubleSize(1, startUsageAmount_);
       }
       if (unitPrice_ != null) {
@@ -1398,7 +1402,7 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(usageUnit_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, usageUnit_);
     }
-    if (displayQuantity_ != 0D) {
+    if (java.lang.Double.doubleToRawLongBits(displayQuantity_) != 0) {
       output.writeDouble(2, displayQuantity_);
     }
     for (int i = 0; i < tieredRates_.size(); i++) {
@@ -1413,7 +1417,7 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(baseUnitDescription_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 6, baseUnitDescription_);
     }
-    if (baseUnitConversionFactor_ != 0D) {
+    if (java.lang.Double.doubleToRawLongBits(baseUnitConversionFactor_) != 0) {
       output.writeDouble(7, baseUnitConversionFactor_);
     }
     unknownFields.writeTo(output);
@@ -1428,7 +1432,7 @@ public int getSerializedSize() {
     if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(usageUnit_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, usageUnit_);
     }
-    if (displayQuantity_ != 0D) {
+    if (java.lang.Double.doubleToRawLongBits(displayQuantity_) != 0) {
       size += com.google.protobuf.CodedOutputStream.computeDoubleSize(2, displayQuantity_);
     }
     for (int i = 0; i < tieredRates_.size(); i++) {
@@ -1443,7 +1447,7 @@ public int getSerializedSize() {
     if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(baseUnitDescription_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(6, baseUnitDescription_);
     }
-    if (baseUnitConversionFactor_ != 0D) {
+    if (java.lang.Double.doubleToRawLongBits(baseUnitConversionFactor_) != 0) {
       size += com.google.protobuf.CodedOutputStream.computeDoubleSize(7, baseUnitConversionFactor_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/PricingInfo.java b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/PricingInfo.java
index 7ba054803a9..434e4d3bd55 100644
--- a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/PricingInfo.java
+++ b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/PricingInfo.java
@@ -140,6 +140,8 @@ private PricingInfo(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
@@ -424,7 +426,7 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (aggregationInfo_ != null) {
       output.writeMessage(4, getAggregationInfo());
     }
-    if (currencyConversionRate_ != 0D) {
+    if (java.lang.Double.doubleToRawLongBits(currencyConversionRate_) != 0) {
       output.writeDouble(5, currencyConversionRate_);
     }
     unknownFields.writeTo(output);
@@ -448,7 +450,7 @@ public int getSerializedSize() {
     if (aggregationInfo_ != null) {
       size += com.google.protobuf.CodedOutputStream.computeMessageSize(4, getAggregationInfo());
     }
-    if (currencyConversionRate_ != 0D) {
+    if (java.lang.Double.doubleToRawLongBits(currencyConversionRate_) != 0) {
       size += com.google.protobuf.CodedOutputStream.computeDoubleSize(5, currencyConversionRate_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ProjectBillingInfo.java b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ProjectBillingInfo.java
index 4086c87a8ba..2098162bddc 100644
--- a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ProjectBillingInfo.java
+++ b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/ProjectBillingInfo.java
@@ -111,6 +111,8 @@ private ProjectBillingInfo(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/Service.java b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/Service.java
index f3f494ecb91..40c33071e3d 100644
--- a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/Service.java
+++ b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/Service.java
@@ -112,6 +112,8 @@ private Service(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/Sku.java b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/Sku.java
index e35745ffd82..5ef0ee9735b 100644
--- a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/Sku.java
+++ b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/Sku.java
@@ -152,6 +152,8 @@ private Sku(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/UpdateBillingAccountRequest.java b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/UpdateBillingAccountRequest.java
index fb7b6cc99ca..4d5773167b1 100644
--- a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/UpdateBillingAccountRequest.java
+++ b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/UpdateBillingAccountRequest.java
@@ -119,6 +119,8 @@ private UpdateBillingAccountRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/UpdateProjectBillingInfoRequest.java b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/UpdateProjectBillingInfoRequest.java
index 82ca953c8cb..08e373be84a 100644
--- a/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/UpdateProjectBillingInfoRequest.java
+++ b/java-billing/proto-google-cloud-billing-v1/src/main/java/com/google/cloud/billing/v1/UpdateProjectBillingInfoRequest.java
@@ -105,6 +105,8 @@ private UpdateProjectBillingInfoRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {