diff --git a/appengine/flexible/tasks/requirements.txt b/appengine/flexible/tasks/requirements.txt
index cc593bafbfe1..3b8f608fdfc8 100644
--- a/appengine/flexible/tasks/requirements.txt
+++ b/appengine/flexible/tasks/requirements.txt
@@ -1,4 +1,3 @@
 Flask==1.1.2
 gunicorn==20.0.4
 google-cloud-tasks==1.5.0
-googleapis-common-protos==1.51.0
diff --git a/endpoints/bookstore-grpc-transcoding/requirements.txt b/endpoints/bookstore-grpc-transcoding/requirements.txt
index b1f04322e7f5..5e59fe59ccbf 100644
--- a/endpoints/bookstore-grpc-transcoding/requirements.txt
+++ b/endpoints/bookstore-grpc-transcoding/requirements.txt
@@ -2,4 +2,3 @@ grpcio==1.29.0
 grpcio-tools==1.29.0
 google-auth==1.16.0
 six==1.15.0
-googleapis-common-protos==1.51.0
diff --git a/tasks/requirements.txt b/tasks/requirements.txt
index e5b2c4310060..b7bc58a3b74e 100644
--- a/tasks/requirements.txt
+++ b/tasks/requirements.txt
@@ -1,2 +1 @@
 google-cloud-tasks==1.5.0
-googleapis-common-protos==1.51.0