diff --git a/requirements.txt b/requirements.txt
index 955f0206..ad3dadaf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -54,7 +54,7 @@ gevent==1.4.0
 greenlet==0.4.15
 hexbytes==0.2.0
 hiredis==1.0.0
-httplib2==0.9.2
+httplib2==0.18.0
 hyperlink==19.0.0
 idna==2.8
 importlib-metadata==0.18