diff --git a/packages/grpc-tools/package.json b/packages/grpc-tools/package.json
index 5c7337f67..b1f83ce45 100644
--- a/packages/grpc-tools/package.json
+++ b/packages/grpc-tools/package.json
@@ -1,6 +1,6 @@
 {
   "name": "grpc-tools",
-  "version": "1.11.0",
+  "version": "1.11.1",
   "author": "Google Inc.",
   "description": "Tools for developing with gRPC on Node.js",
   "homepage": "https://grpc.io/",
diff --git a/packages/grpc-tools/src/node_plugin.cc b/packages/grpc-tools/src/node_plugin.cc
index 9f83578b2..b847bcaba 100644
--- a/packages/grpc-tools/src/node_plugin.cc
+++ b/packages/grpc-tools/src/node_plugin.cc
@@ -65,6 +65,10 @@ class NodeGrpcGenerator : public grpc::protobuf::compiler::CodeGenerator {
     coded_out.WriteRaw(code.data(), code.size());
     return true;
   }
+
+  uint64_t GetSupportedFeatures() const override {
+    return FEATURE_PROTO3_OPTIONAL;
+  }
 };
 
 int main(int argc, char* argv[]) {