diff --git a/pyproject.toml b/pyproject.toml
index c4335f6..1d14703 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,7 +28,7 @@ Homepage = "https://github.com/Hochfrequenz/python_template_repository"
 [dependency-groups]
 tests = ["pytest==9.1.1"]
 linting = [{ include-group = "tests" }, "ruff==0.16.5"]
-type_check = [{ include-group = "tests" }, "mypy==2.3.0"]
+type_check = [{ include-group = "tests" }, "mypy==2.3.1"]
 spell_check = ["codespell==2.4.3"]
 coverage = [{ include-group = "tests" }, "coverage==7.15.4"]
 # build/twine are only needed to build & publish this package to PyPI, not by users installing it, so they live