diff --git a/grpc-google-iam-v1/src/main/java/com/google/iam/v1/IAMPolicyGrpc.java b/grpc-google-iam-v1/src/main/java/com/google/iam/v1/IAMPolicyGrpc.java
index 55edd904..de12f933 100644
--- a/grpc-google-iam-v1/src/main/java/com/google/iam/v1/IAMPolicyGrpc.java
+++ b/grpc-google-iam-v1/src/main/java/com/google/iam/v1/IAMPolicyGrpc.java
@@ -16,11 +16,6 @@
 package com.google.iam.v1;
 
 import static io.grpc.MethodDescriptor.generateFullMethodName;
-import static io.grpc.stub.ClientCalls.asyncUnaryCall;
-import static io.grpc.stub.ClientCalls.blockingUnaryCall;
-import static io.grpc.stub.ClientCalls.futureUnaryCall;
-import static io.grpc.stub.ServerCalls.asyncUnaryCall;
-import static io.grpc.stub.ServerCalls.asyncUnimplementedUnaryCall;
 
 /**
  *
@@ -252,7 +247,8 @@ public abstract static class IAMPolicyImplBase implements io.grpc.BindableServic
     public void setIamPolicy(
         com.google.iam.v1.SetIamPolicyRequest request,
         io.grpc.stub.StreamObserver<com.google.iam.v1.Policy> responseObserver) {
-      asyncUnimplementedUnaryCall(getSetIamPolicyMethod(), responseObserver);
+      io.grpc.stub.ServerCalls.asyncUnimplementedUnaryCall(
+          getSetIamPolicyMethod(), responseObserver);
     }
 
     /**
@@ -267,7 +263,8 @@ public void setIamPolicy(
     public void getIamPolicy(
         com.google.iam.v1.GetIamPolicyRequest request,
         io.grpc.stub.StreamObserver<com.google.iam.v1.Policy> responseObserver) {
-      asyncUnimplementedUnaryCall(getGetIamPolicyMethod(), responseObserver);
+      io.grpc.stub.ServerCalls.asyncUnimplementedUnaryCall(
+          getGetIamPolicyMethod(), responseObserver);
     }
 
     /**
@@ -286,7 +283,8 @@ public void testIamPermissions(
         com.google.iam.v1.TestIamPermissionsRequest request,
         io.grpc.stub.StreamObserver<com.google.iam.v1.TestIamPermissionsResponse>
             responseObserver) {
-      asyncUnimplementedUnaryCall(getTestIamPermissionsMethod(), responseObserver);
+      io.grpc.stub.ServerCalls.asyncUnimplementedUnaryCall(
+          getTestIamPermissionsMethod(), responseObserver);
     }
 
     @java.lang.Override
@@ -294,19 +292,19 @@ public final io.grpc.ServerServiceDefinition bindService() {
       return io.grpc.ServerServiceDefinition.builder(getServiceDescriptor())
           .addMethod(
               getSetIamPolicyMethod(),
-              asyncUnaryCall(
+              io.grpc.stub.ServerCalls.asyncUnaryCall(
                   new MethodHandlers<
                       com.google.iam.v1.SetIamPolicyRequest, com.google.iam.v1.Policy>(
                       this, METHODID_SET_IAM_POLICY)))
           .addMethod(
               getGetIamPolicyMethod(),
-              asyncUnaryCall(
+              io.grpc.stub.ServerCalls.asyncUnaryCall(
                   new MethodHandlers<
                       com.google.iam.v1.GetIamPolicyRequest, com.google.iam.v1.Policy>(
                       this, METHODID_GET_IAM_POLICY)))
           .addMethod(
               getTestIamPermissionsMethod(),
-              asyncUnaryCall(
+              io.grpc.stub.ServerCalls.asyncUnaryCall(
                   new MethodHandlers<
                       com.google.iam.v1.TestIamPermissionsRequest,
                       com.google.iam.v1.TestIamPermissionsResponse>(
@@ -360,7 +358,7 @@ protected IAMPolicyStub build(io.grpc.Channel channel, io.grpc.CallOptions callO
     public void setIamPolicy(
         com.google.iam.v1.SetIamPolicyRequest request,
         io.grpc.stub.StreamObserver<com.google.iam.v1.Policy> responseObserver) {
-      asyncUnaryCall(
+      io.grpc.stub.ClientCalls.asyncUnaryCall(
           getChannel().newCall(getSetIamPolicyMethod(), getCallOptions()),
           request,
           responseObserver);
@@ -378,7 +376,7 @@ public void setIamPolicy(
     public void getIamPolicy(
         com.google.iam.v1.GetIamPolicyRequest request,
         io.grpc.stub.StreamObserver<com.google.iam.v1.Policy> responseObserver) {
-      asyncUnaryCall(
+      io.grpc.stub.ClientCalls.asyncUnaryCall(
           getChannel().newCall(getGetIamPolicyMethod(), getCallOptions()),
           request,
           responseObserver);
@@ -400,7 +398,7 @@ public void testIamPermissions(
         com.google.iam.v1.TestIamPermissionsRequest request,
         io.grpc.stub.StreamObserver<com.google.iam.v1.TestIamPermissionsResponse>
             responseObserver) {
-      asyncUnaryCall(
+      io.grpc.stub.ClientCalls.asyncUnaryCall(
           getChannel().newCall(getTestIamPermissionsMethod(), getCallOptions()),
           request,
           responseObserver);
@@ -452,7 +450,8 @@ protected IAMPolicyBlockingStub build(
      * </pre>
      */
     public com.google.iam.v1.Policy setIamPolicy(com.google.iam.v1.SetIamPolicyRequest request) {
-      return blockingUnaryCall(getChannel(), getSetIamPolicyMethod(), getCallOptions(), request);
+      return io.grpc.stub.ClientCalls.blockingUnaryCall(
+          getChannel(), getSetIamPolicyMethod(), getCallOptions(), request);
     }
 
     /**
@@ -465,7 +464,8 @@ public com.google.iam.v1.Policy setIamPolicy(com.google.iam.v1.SetIamPolicyReque
      * </pre>
      */
     public com.google.iam.v1.Policy getIamPolicy(com.google.iam.v1.GetIamPolicyRequest request) {
-      return blockingUnaryCall(getChannel(), getGetIamPolicyMethod(), getCallOptions(), request);
+      return io.grpc.stub.ClientCalls.blockingUnaryCall(
+          getChannel(), getGetIamPolicyMethod(), getCallOptions(), request);
     }
 
     /**
@@ -482,7 +482,7 @@ public com.google.iam.v1.Policy getIamPolicy(com.google.iam.v1.GetIamPolicyReque
      */
     public com.google.iam.v1.TestIamPermissionsResponse testIamPermissions(
         com.google.iam.v1.TestIamPermissionsRequest request) {
-      return blockingUnaryCall(
+      return io.grpc.stub.ClientCalls.blockingUnaryCall(
           getChannel(), getTestIamPermissionsMethod(), getCallOptions(), request);
     }
   }
@@ -532,7 +532,7 @@ protected IAMPolicyFutureStub build(io.grpc.Channel channel, io.grpc.CallOptions
      */
     public com.google.common.util.concurrent.ListenableFuture<com.google.iam.v1.Policy>
         setIamPolicy(com.google.iam.v1.SetIamPolicyRequest request) {
-      return futureUnaryCall(
+      return io.grpc.stub.ClientCalls.futureUnaryCall(
           getChannel().newCall(getSetIamPolicyMethod(), getCallOptions()), request);
     }
 
@@ -547,7 +547,7 @@ protected IAMPolicyFutureStub build(io.grpc.Channel channel, io.grpc.CallOptions
      */
     public com.google.common.util.concurrent.ListenableFuture<com.google.iam.v1.Policy>
         getIamPolicy(com.google.iam.v1.GetIamPolicyRequest request) {
-      return futureUnaryCall(
+      return io.grpc.stub.ClientCalls.futureUnaryCall(
           getChannel().newCall(getGetIamPolicyMethod(), getCallOptions()), request);
     }
 
@@ -566,7 +566,7 @@ protected IAMPolicyFutureStub build(io.grpc.Channel channel, io.grpc.CallOptions
     public com.google.common.util.concurrent.ListenableFuture<
             com.google.iam.v1.TestIamPermissionsResponse>
         testIamPermissions(com.google.iam.v1.TestIamPermissionsRequest request) {
-      return futureUnaryCall(
+      return io.grpc.stub.ClientCalls.futureUnaryCall(
           getChannel().newCall(getTestIamPermissionsMethod(), getCallOptions()), request);
     }
   }
diff --git a/synth.metadata b/synth.metadata
index 83e714d1..79207e89 100644
--- a/synth.metadata
+++ b/synth.metadata
@@ -4,15 +4,15 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-iam.git",
-        "sha": "2cdb8de5ace14f0832462187d9c75ec04d7c475c"
+        "sha": "aae5c0ce915f14f33a9fd5b43918d05411eaa178"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "8d73f9486fc193a150f6c907dfb9f49431aff3ff",
-        "internalRef": "332497859"
+        "sha": "0e915217fb5261c1e57bfaf0e16ee5c7feaaba89",
+        "internalRef": "361377784"
       }
     },
     {