diff --git a/pyproject.toml b/pyproject.toml
index 77a572ce..653d7578 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,7 +30,7 @@ dependencies = [
 dev = [
     "pytest==9.0.2",
     "pytest-cov==7.1.0",
-    "mypy==1.19.1",
+    "mypy==1.20.0",
     "types-PyYAML==6.0.12.20250915",
     "types-Deprecated==1.3.1.20260130",
     "isort==8.0.1",