diff --git a/setup.py b/setup.py
index 8e19a8c..7e63930 100644
--- a/setup.py
+++ b/setup.py
@@ -48,7 +48,7 @@
         'slackclient==1.3.1',
         'icalendar',
         'pymsteams',
-        'idna==2.10'
+        'idna==3.7'
     ],
     extras_require={
         'ldap': ['python-ldap'],