diff --git a/requirements-dev.txt b/requirements-dev.txt
index b4351f25..6e665d86 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -56,7 +56,7 @@ msal-extensions==1.3.1
 
 mypy==1.15.0
 
-mypy-extensions==1.0.0 ; python_version >= '3.5'
+mypy-extensions==1.1.0 ; python_version >= '3.5'
 
 outcome==1.3.0.post0 ; python_version >= '3.7'