diff --git a/zopsm/requirements.txt b/zopsm/requirements.txt
index 19a5b35..452bbaa 100644
--- a/zopsm/requirements.txt
+++ b/zopsm/requirements.txt
@@ -13,7 +13,7 @@ greenlet==0.4.15
 gunicorn==19.7.1
 hiredis==0.3.0
 hvac==0.7.0
-idna==2.7
+idna==3.3
 isort==4.3.16
 lazy-object-proxy==1.3.1
 Mako==1.0.7