diff --git a/requirements.txt b/requirements.txt
index 801d193..8f25ac3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ Flask-Mail==0.9.1
 Flask-Migrate==2.5.3
 Flask-Script==2.0.5
 Flask-SQLAlchemy==2.5.1
-idna==2.6
+idna==3.15
 itsdangerous==2.0.0
 Jinja2==3.0.3
 Mako==1.2.2