diff --git a/requirements.txt b/requirements.txt
index 9589168..5e16bb5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ Flask-Migrate==2.5.3
 Flask-SQLAlchemy==2.4.4
 Flask-WTF==0.14.3
 gunicorn==20.0.4
-idna==2.10
+idna==3.1
 itsdangerous==1.1.0
 Jinja2==2.11.2
 Mako==1.1.3