diff --git a/requirements-dev.txt b/requirements-dev.txt
index 9d73e2e..b8da4bf 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -7,7 +7,7 @@ flake8==7.3.0
 iniconfig==2.1.0
 mccabe==0.7.0
 mypy==1.18.2
-mypy-extensions==1.0.0
+mypy-extensions==1.1.0
 packaging==25.0
 pluggy==1.6.0
 pycodestyle==2.14.0