diff --git a/requirements.txt b/requirements.txt
index 631a9be..3db1b4c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -47,7 +47,7 @@ google-auth==1.6.3
 google-auth-httplib2==0.0.3
 google-auth-oauthlib==0.4.0
 greenlet==0.4.15
-httplib2==0.13.1
+httplib2==0.19.0
 httplib2shim==0.0.3
 idna==2.8
 inflection==0.3.1