diff --git a/requirements.txt b/requirements.txt
index 49f7e66..a35d9ee 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ Click==7.0
 Flask==1.0.2
 Flask-HTTPAuth==3.2.4
 Flask-SQLAlchemy==2.3.2
-httplib2==0.12.0
+httplib2==0.18.0
 idna==2.8
 itsdangerous==1.1.0
 Jinja2==2.10