diff --git a/requirements.txt b/requirements.txt
index 2664600..f5a2f23 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -35,7 +35,7 @@ google-auth-httplib2==0.0.3
 google-auth-oauthlib==0.4.1
 greenlet==0.4.15
 gunicorn==20.0.4
-httplib2==0.18.0
+httplib2==0.19.0
 idna==2.8
 importlib-metadata==1.1.0
 inflect==3.0.2