diff --git a/gmail/quickstart/requirements.txt b/gmail/quickstart/requirements.txt
index 34aaede8..9cc8c626 100644
--- a/gmail/quickstart/requirements.txt
+++ b/gmail/quickstart/requirements.txt
@@ -1,3 +1,3 @@
 google-api-python-client==1.7.8
 google-auth-httplib2==0.0.3
-google-auth-oauthlib==0.4.0
\ No newline at end of file
+google-auth-oauthlib==1.2.1
\ No newline at end of file