diff --git a/requirements.txt b/requirements.txt
index 8bff781..d5229bd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ elasticsearch-dsl==5.2.0
 Flask==0.11.1
 google-api-python-client==1.5.2
 html5lib==0.999999999
-httplib2==0.10.3
+httplib2==0.18.0
 httplib2shim==0.0.1
 idna==2.5
 itsdangerous==0.24