diff --git a/mypy.ini b/mypy.ini
index 5783b0b2f67..08dce1ad594 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -7,6 +7,7 @@ python_version = 3.10
 show_error_codes = true
 follow_imports = silent
 ignore_missing_imports = true
+local_partial_types = true
 strict_equality = true
 no_implicit_optional = true
 warn_incomplete_stub = true
diff --git a/script/hassfest/mypy_config.py b/script/hassfest/mypy_config.py
index a97efa10d99..36aa6083326 100644
--- a/script/hassfest/mypy_config.py
+++ b/script/hassfest/mypy_config.py
@@ -41,6 +41,7 @@ GENERAL_SETTINGS: Final[dict[str, str]] = {
     "follow_imports": "silent",
     # Enable some checks globally.
     "ignore_missing_imports": "true",
+    "local_partial_types": "true",
     "strict_equality": "true",
     "no_implicit_optional": "true",
     "warn_incomplete_stub": "true",