diff --git a/requirements_dev.txt b/requirements_dev.txt
index cb099b6..680e294 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -6,7 +6,7 @@ flake8-bugbear==23.7.10
 flake8-docstrings==1.7.0
 flake8-rst-docstrings==0.3.0
 flake8==6.0.0
-mypy==1.4.1
+mypy==1.5.1
 pep8-naming==0.13.3
 pre-commit-hooks==4.4.0
 pre-commit==3.3.3