diff --git a/requirements-dev.txt b/requirements-dev.txt
index c2cf477..cdaf078 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -16,7 +16,7 @@ flit==3.9.0
 
 flit-core==3.9.0
 
-idna==3.7
+idna==3.8
 
 importlib-metadata==6.8.0 ; python_version >= '3.8'