diff --git a/examples/extras/requirements.txt b/examples/extras/requirements.txt
index 743bbe7921..49b86eb597 100644
--- a/examples/extras/requirements.txt
+++ b/examples/extras/requirements.txt
@@ -1 +1,2 @@
 google-cloud-language==0.27.0
+googleapis-common-protos==1.51.0