diff --git a/calendar/quickstart/requirements.txt b/calendar/quickstart/requirements.txt
index b50bc3c8..e1b9babb 100644
--- a/calendar/quickstart/requirements.txt
+++ b/calendar/quickstart/requirements.txt
@@ -1,3 +1,3 @@
-google-api-python-client==1.7.9
+google-api-python-client==2.80.0
 google-auth-httplib2==0.0.3
 google-auth-oauthlib==0.4.0
\ No newline at end of file