diff --git a/requirements.txt b/requirements.txt
index 99ad052..f2fb81c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 coverage==4.1
 funcsigs==1.0.2
-httplib2==0.9.2
+httplib2==0.18.0
 mock==2.0.0
 oauth2client==3.0.0
 pbr==1.10.0