diff --git a/appengine/uploader/requirements.txt b/appengine/uploader/requirements.txt
index 701f752..07714e2 100644
--- a/appengine/uploader/requirements.txt
+++ b/appengine/uploader/requirements.txt
@@ -26,7 +26,7 @@ grpc-google-iam-v1==0.11.4
 grpcio==1.18.0
 gunicorn==19.9.0
 httplib2==0.12.0
-idna==2.8
+idna==3.7
 itsdangerous==1.1.0
 Jinja2==2.10
 MarkupSafe==1.1.0