diff --git a/pyproject.toml b/pyproject.toml
index 9572388..13012bb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -55,7 +55,7 @@ dev = [
     "pytest-asyncio>=1.3.0,<2.0.0",
     "pre-commit>=4.5.1,<5.0.0",
     "ruff>=0.14.0",
-    "mypy>=1.18.2",
+    "mypy>=1.20.1",
 ]
 
 [tool.coverage.run]