diff --git a/sys/src/requirements.txt b/sys/src/requirements.txt
index 42697f1..81ae04b 100644
--- a/sys/src/requirements.txt
+++ b/sys/src/requirements.txt
@@ -7,7 +7,7 @@ google-api-python-client==1.7.7
 google-auth==1.6.2
 google-auth-httplib2==0.0.3
 google-auth-oauthlib==0.2.0
-httplib2==0.12.0
+httplib2==0.18.0
 idna==2.8
 itsdangerous==1.1.0
 Jinja2==2.10