diff --git a/infra/helper.py b/infra/helper.py
index 89ca202e5..5f4874fcb 100755
--- a/infra/helper.py
+++ b/infra/helper.py
@@ -259,7 +259,7 @@ def get_parser():  # pylint: disable=too-many-statements,too-many-locals
   generate_parser.add_argument(
       '--language',
       default=constants.DEFAULT_LANGUAGE,
-      choices=['c', 'c++', 'rust', 'go', 'jvm', 'swift', 'python'],
+      choices=['c', 'c++', 'rust', 'go', 'jvm', 'swift', 'python', 'javascript'],
       help='Project language.')
   _add_external_project_args(generate_parser)