diff --git a/pyproject.toml b/pyproject.toml
index 1a6b1d0..dafcdc2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -75,7 +75,7 @@ tests = [
     "pytest==8.3.3"
 ]
 type_check = [
-    "mypy==1.11.2",
+    "mypy==1.12.1",
     "types-python-dateutil==2.9.0.20241003",
     "types-pytz==2024.2.0.20241003"
 ]