diff --git a/pyproject.toml b/pyproject.toml
index 2ce3dab..2adbc4c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,7 +26,7 @@ dependencies = [
 dev = [
     "black==26.5.1",
     "build==1.5.0",
-    "mypy==2.1.0",
+    "mypy==2.3.1",
     "pytest==9.1.1",
     "pytest-cov==7.1.0",
     "pylint==4.0.6",