diff --git a/requirements.txt b/requirements.txt
index 31647a23..6f064390 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -42,7 +42,7 @@ futures==3.0.5
 gevent==1.4.0
 greenlet==1.1.2
 gunicorn==19.10.0
-idna==2.1
+idna==3.7
 ipaddress==1.0.16
 Khayyam==3.0.15
 kombu==3.0.37