diff --git a/docs/mail-merge/requirements.txt b/docs/mail-merge/requirements.txt
index 3b4532bf..5336f8a6 100644
--- a/docs/mail-merge/requirements.txt
+++ b/docs/mail-merge/requirements.txt
@@ -1,3 +1,3 @@
 google-auth==2.3.3
-google-api-python-client==2.31.0
+google-api-python-client==2.151.0
 oauth2client==4.1.3