diff --git a/pyproject.toml b/pyproject.toml
index 3d989ce..2dec3ef 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -52,7 +52,7 @@ dev = [
     "pytest-timeout>=2.3",
     "ruff==0.16.0",
     "pip-audit>=2.7",
-    "mypy==2.3.0",
+    "mypy==2.3.1",
     "types-PyYAML==6.0.12.20260724",
 ]