diff --git a/requirements.txt b/requirements.txt
index 479ab55..1a52bb9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ google-api-python-client==1.7.6
 google-auth==1.6.1
 google-auth-httplib2==0.0.3
 google-auth-oauthlib==0.2.0
-httplib2==0.12.0
+httplib2==0.19.0
 idna==2.8
 itsdangerous==1.1.0
 Jinja2==2.10