diff --git a/google/cloud/language/v1/BUILD.bazel b/google/cloud/language/v1/BUILD.bazel
index 4f8880b8..a460119a 100644
--- a/google/cloud/language/v1/BUILD.bazel
+++ b/google/cloud/language/v1/BUILD.bazel
@@ -231,6 +231,7 @@ nodejs_gapic_library(
     grpc_service_config = "language_grpc_service_config.json",
     package = "google.cloud.language.v1",
     service_yaml = "//google/cloud/language:language_v1.yaml",
+    extra_protoc_parameters = ["metadata"],
     deps = [],
 )
 
diff --git a/google/cloud/language/v1beta2/BUILD.bazel b/google/cloud/language/v1beta2/BUILD.bazel
index 4791236f..39750680 100644
--- a/google/cloud/language/v1beta2/BUILD.bazel
+++ b/google/cloud/language/v1beta2/BUILD.bazel
@@ -231,6 +231,7 @@ nodejs_gapic_library(
     grpc_service_config = "language_grpc_service_config.json",
     package = "google.cloud.language.v1beta2",
     service_yaml = "language_v1beta2.yaml",
+    extra_protoc_parameters = ["metadata"],
     deps = [],
 )