diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 8e548a6..8d05a50
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ DateTime==4.3
 docutils==0.14
 futures==3.1.1
 google-api-python-client==1.6.1
-httplib2==0.13.0
+httplib2==0.18.0
 iampoliciesgonewild==1.0.6.2
 idna==2.6
 ipaddress==1.0.22