diff --git a/grpc-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/BigtableInstanceAdminGrpc.java b/grpc-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/BigtableInstanceAdminGrpc.java
index e9f2ea804b..a48df3e9ac 100644
--- a/grpc-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/BigtableInstanceAdminGrpc.java
+++ b/grpc-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/BigtableInstanceAdminGrpc.java
@@ -34,7 +34,8 @@ public final class BigtableInstanceAdminGrpc {
 
   private BigtableInstanceAdminGrpc() {}
 
-  public static final String SERVICE_NAME = "google.bigtable.admin.v2.BigtableInstanceAdmin";
+  public static final java.lang.String SERVICE_NAME =
+      "google.bigtable.admin.v2.BigtableInstanceAdmin";
 
   // Static method descriptors that strictly reflect the proto.
   private static volatile io.grpc.MethodDescriptor<
@@ -2736,9 +2737,9 @@ private static final class BigtableInstanceAdminFileDescriptorSupplier
   private static final class BigtableInstanceAdminMethodDescriptorSupplier
       extends BigtableInstanceAdminBaseDescriptorSupplier
       implements io.grpc.protobuf.ProtoMethodDescriptorSupplier {
-    private final String methodName;
+    private final java.lang.String methodName;
 
-    BigtableInstanceAdminMethodDescriptorSupplier(String methodName) {
+    BigtableInstanceAdminMethodDescriptorSupplier(java.lang.String methodName) {
       this.methodName = methodName;
     }
 
diff --git a/grpc-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/BigtableTableAdminGrpc.java b/grpc-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/BigtableTableAdminGrpc.java
index 9f2702644a..cf0395cdf0 100644
--- a/grpc-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/BigtableTableAdminGrpc.java
+++ b/grpc-google-cloud-bigtable-admin-v2/src/main/java/com/google/bigtable/admin/v2/BigtableTableAdminGrpc.java
@@ -34,7 +34,7 @@ public final class BigtableTableAdminGrpc {
 
   private BigtableTableAdminGrpc() {}
 
-  public static final String SERVICE_NAME = "google.bigtable.admin.v2.BigtableTableAdmin";
+  public static final java.lang.String SERVICE_NAME = "google.bigtable.admin.v2.BigtableTableAdmin";
 
   // Static method descriptors that strictly reflect the proto.
   private static volatile io.grpc.MethodDescriptor<
@@ -3285,9 +3285,9 @@ private static final class BigtableTableAdminFileDescriptorSupplier
   private static final class BigtableTableAdminMethodDescriptorSupplier
       extends BigtableTableAdminBaseDescriptorSupplier
       implements io.grpc.protobuf.ProtoMethodDescriptorSupplier {
-    private final String methodName;
+    private final java.lang.String methodName;
 
-    BigtableTableAdminMethodDescriptorSupplier(String methodName) {
+    BigtableTableAdminMethodDescriptorSupplier(java.lang.String methodName) {
       this.methodName = methodName;
     }
 
diff --git a/grpc-google-cloud-bigtable-v2/src/main/java/com/google/bigtable/v2/BigtableGrpc.java b/grpc-google-cloud-bigtable-v2/src/main/java/com/google/bigtable/v2/BigtableGrpc.java
index 968758908b..0fcea460e8 100644
--- a/grpc-google-cloud-bigtable-v2/src/main/java/com/google/bigtable/v2/BigtableGrpc.java
+++ b/grpc-google-cloud-bigtable-v2/src/main/java/com/google/bigtable/v2/BigtableGrpc.java
@@ -32,7 +32,7 @@ public final class BigtableGrpc {
 
   private BigtableGrpc() {}
 
-  public static final String SERVICE_NAME = "google.bigtable.v2.Bigtable";
+  public static final java.lang.String SERVICE_NAME = "google.bigtable.v2.Bigtable";
 
   // Static method descriptors that strictly reflect the proto.
   private static volatile io.grpc.MethodDescriptor<
@@ -1256,9 +1256,9 @@ private static final class BigtableFileDescriptorSupplier extends BigtableBaseDe
 
   private static final class BigtableMethodDescriptorSupplier extends BigtableBaseDescriptorSupplier
       implements io.grpc.protobuf.ProtoMethodDescriptorSupplier {
-    private final String methodName;
+    private final java.lang.String methodName;
 
-    BigtableMethodDescriptorSupplier(String methodName) {
+    BigtableMethodDescriptorSupplier(java.lang.String methodName) {
       this.methodName = methodName;
     }