diff --git a/tools/requirements.txt b/tools/requirements.txt
index 9bbee77..ebebc56 100644
--- a/tools/requirements.txt
+++ b/tools/requirements.txt
@@ -11,7 +11,7 @@ firebase==3.0.1
 google-api-python-client==1.7.8
 google-auth==1.6.3
 google-auth-httplib2==0.0.3
-httplib2==0.12.1
+httplib2==0.18.0
 idna==2.8
 jdcal==1.4
 kiwisolver==1.0.1