diff --git a/requirement.txt b/requirement.txt
index e9aa22b..43c613d 100644
--- a/requirement.txt
+++ b/requirement.txt
@@ -12,7 +12,7 @@ google==2.0.1
 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
 Naked==0.1.31
 protobuf==3.7.0