diff --git a/pyproject.toml b/pyproject.toml
index 4a0859e..8a1bae7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -66,7 +66,7 @@ docs = [
 dev = [
     "pytest~=8.3.2",
     "pre-commit>=3.8,<4.1",
-    "mypy~=1.11.2",
+    "mypy>=1.11.2,<1.13.0",
     "ruff~=0.6.5",
     "tox>=4.18.1,<4.22.0"
 ]