diff --git a/requirements.txt b/requirements.txt
index f09e263..727b58c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,7 +31,7 @@ google-api-python-client==1.6.4
 greenlet==0.4.12
 grpc==0.3.post19
 grpcio==1.8.4
-httplib2==0.10.3
+httplib2==0.18.0
 idna==2.5
 imagesize==0.7.1
 ipaddress==1.0.18