diff --git a/requirements.txt b/requirements.txt
index 0474215..8c0455e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ cryptography==2.1.4
 enum34==1.1.6
 future==0.16.0
 gspread==0.6.2
-httplib2==0.10.3
+httplib2==0.19.0
 idna==2.6
 ipaddress==1.0.19
 oauth2client==1.5.2