diff --git a/requirements.txt b/requirements.txt
index b470c38..5148c18 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 apiclient==1.0.2
 google-api-python-client==1.4.2
-httplib2==0.9.1
+httplib2==0.18.0
 oauth2client==1.5.1
 pyasn1==0.1.8
 pyasn1-modules==0.0.7