diff --git a/requirements-dev.txt b/requirements-dev.txt
index 8410bb3..a26b48f 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -13,4 +13,4 @@ twine
 wheel
 typing-extensions >= 4.16.0
 approvaltests >= 19.1.1
-mypy == 2.3.0
+mypy == 2.3.1