diff --git a/leaderboard/requirements.txt b/leaderboard/requirements.txt
index 65d19af..dc91f18 100644
--- a/leaderboard/requirements.txt
+++ b/leaderboard/requirements.txt
@@ -6,7 +6,7 @@ Flask-Cache==0.13.1
 Flask-FlatPages==0.6
 Flask-MySQL==1.4.0
 gunicorn==19.7.1
-idna==2.6
+idna==3.7
 itsdangerous==0.24
 Jinja2==3.1.3
 Markdown==2.6.11