diff --git a/requirements-dev.txt b/requirements-dev.txt
index d108450a..8dbaff6f 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -31,7 +31,7 @@ dill==0.4.1
 
 exceptiongroup==1.3.1 ; python_version < '3.11'
 
-idna==3.15 ; python_version >= '3.5'
+idna==3.18 ; python_version >= '3.5'
 
 importlib-metadata==7.1.0 ; python_version >= '3.7'