diff --git a/mypy.ini b/mypy.ini
index fdbacd0c817..9e1b25d7ad4 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -14,7 +14,7 @@ warn_incomplete_stub = true
 warn_redundant_casts = true
 warn_unused_configs = true
 warn_unused_ignores = true
-enable_error_code = ignore-without-code, truthy-iterable
+enable_error_code = ignore-without-code, redundant-self, truthy-iterable
 disable_error_code = annotation-unchecked
 strict_concatenate = false
 check_untyped_defs = true
diff --git a/script/hassfest/mypy_config.py b/script/hassfest/mypy_config.py
index fa69a56f601..86565c9065c 100644
--- a/script/hassfest/mypy_config.py
+++ b/script/hassfest/mypy_config.py
@@ -48,7 +48,13 @@ GENERAL_SETTINGS: Final[dict[str, str]] = {
     "warn_redundant_casts": "true",
     "warn_unused_configs": "true",
     "warn_unused_ignores": "true",
-    "enable_error_code": ", ".join(["ignore-without-code", "truthy-iterable"]),
+    "enable_error_code": ", ".join(
+        [
+            "ignore-without-code",
+            "redundant-self",
+            "truthy-iterable",
+        ]
+    ),
     "disable_error_code": ", ".join(["annotation-unchecked"]),
     # Strict_concatenate breaks passthrough ParamSpec typing
     "strict_concatenate": "false",