diff --git a/requirements.txt b/requirements.txt
index 79bfcb9..e9dc6aa 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,4 +7,4 @@ google-auth-httplib2==0.1.0
 google-auth-oauthlib==0.4.6
 google-api-python-client>=1.6.0,<2.0.0
 google-cloud-core==2.1.0
-httplib2==0.20.1
+httplib2==0.22.0