diff --git a/pyproject.toml b/pyproject.toml
index 92c07b1..4cd6f5c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -54,7 +54,7 @@ dev = [
     "pytest-cov>=6.0",
     "pytest-asyncio>=0.24",
     "ruff>=0.11",
-    "mypy>=1.13",
+    "mypy>=1.20.0",
     "pre-commit>=4.0",
     "python-dotenv>=1.2.2",
     "pip-audit>=2.7",