diff --git a/requirements.txt b/requirements.txt
index 4453de8..579ea31 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ cryptography==1.7.1
 decorator==4.0.10
 enum34==1.1.6
 google-api-python-client==1.5.5
-httplib2==0.9.2
+httplib2==0.18.0
 idna==2.1
 ipaddress==1.0.17
 kombu==4.0.2