diff --git a/requirements/dev.txt b/requirements/dev.txt
index e94cde5..cc481ea 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -1,7 +1,7 @@
 black==24.2.0
 build==1.1.1
 isort==5.13.2
-mypy==1.8.0
+mypy==1.9.0
 pylint==3.1.0
 pytest-cov==4.1.0
 pytest==8.1.0