diff --git a/pyproject.toml b/pyproject.toml
index 8d82061..c8efb27 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,7 +24,7 @@ mergify = "mergify_cli.cli:main"
 
 [dependency-groups]
 dev = [
-    "mypy==1.18.2",
+    "mypy==1.19.0",
     "mypy-extensions==1.1.0",
     "ruff==0.14.9",
     "pytest==9.0.2",