diff --git a/requirements.txt b/requirements.txt
index e90cd12..63a3e64 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,7 +28,7 @@ future==0.18.1
 guacamole==0.9.2
 h5py==2.10.0
 html5lib==0.999
-httplib2==0.9.1
+httplib2==0.18.0
 idna==2.0
 importlib-metadata==0.23
 itsdangerous==1.1.0