diff --git a/third_party/2.7/google/protobuf/__init__.pyi b/third_party/2.7/google/protobuf/__init__.pyi
index e69de29bb..d23216480 100644
--- a/third_party/2.7/google/protobuf/__init__.pyi
+++ b/third_party/2.7/google/protobuf/__init__.pyi
@@ -0,0 +1 @@
+__version__ = ...  # type: str