diff --git a/pyproject.toml b/pyproject.toml
index 94c6136..3e68aa5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,7 +12,7 @@ dependencies = [
 
 [dependency-groups]
 dev = [
-    "mypy>=1.19.1",
+    "mypy>=1.20.1",
     "ruff>=0.14.10",
     "yamllint>=1.37.1",
 ]