diff --git a/requirements.txt b/requirements.txt
index 2205a88..642b250 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ flake8==3.7.9
 Flask==1.1.1
 Flask-Babel==0.12.2
 Flask-Moment==0.9.0
-httplib2==0.15.0
+httplib2==0.18.0
 itsdangerous==1.1.0
 jedi==0.16.0
 Jinja2==2.10.1