diff --git a/temporal-serviceclient/build.gradle b/temporal-serviceclient/build.gradle
index c52bde00f..a3bd7e56d 100644
--- a/temporal-serviceclient/build.gradle
+++ b/temporal-serviceclient/build.gradle
@@ -64,7 +64,7 @@ protobuf {
     }
     plugins {
         grpc {
-            artifact = 'io.grpc:protoc-gen-grpc-java:1.34.1' + (System.getProperty("os.arch") == 'aarch64' ? ':osx-x86_64' : '')
+            artifact = 'io.grpc:protoc-gen-grpc-java:1.55.1' + (System.getProperty("os.arch") == 'aarch64' ? ':osx-x86_64' : '')
         }
     }
     generateProtoTasks {
diff --git a/temporal-test-server/build.gradle b/temporal-test-server/build.gradle
index 4f07b34a8..762547ae5 100644
--- a/temporal-test-server/build.gradle
+++ b/temporal-test-server/build.gradle
@@ -66,7 +66,7 @@ protobuf {
     }
     plugins {
         grpc {
-            artifact = 'io.grpc:protoc-gen-grpc-java:1.34.1' + (System.getProperty("os.arch") == 'aarch64' ? ':osx-x86_64' : '')
+            artifact = 'io.grpc:protoc-gen-grpc-java:1.55.1' + (System.getProperty("os.arch") == 'aarch64' ? ':osx-x86_64' : '')
         }
     }
     generateProtoTasks {