diff --git a/pyproject.toml b/pyproject.toml
index c945cc07..be8a6bd0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -72,7 +72,7 @@ mss = "mss.__main__:main"
 dev = [
   "build==1.4.3",
   "lxml==6.1.0",
-  "mypy==1.19.1",
+  "mypy==1.20.2",
   "ruff==0.15.12",
   "twine==6.2.0",
 ]