diff --git a/requirements.txt b/requirements.txt
index 86da8b6..a6a3fd4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ dj-database-url==0.5.0
 Django==3.1.13
 django-heroku==0.3.1
 gunicorn==20.0.4
-idna==2.9
+idna==3.7
 psycopg2==2.8.4
 pycparser==2.20
 pyOpenSSL==19.1.0