diff --git a/homeassistant/components/alarmdecoder/const.py b/homeassistant/components/alarmdecoder/const.py
index f1bfb66f0d4..4aba16a9cf8 100644
--- a/homeassistant/components/alarmdecoder/const.py
+++ b/homeassistant/components/alarmdecoder/const.py
@@ -32,7 +32,7 @@ DEFAULT_ARM_OPTIONS = {
     CONF_AUTO_BYPASS: DEFAULT_AUTO_BYPASS,
     CONF_CODE_ARM_REQUIRED: DEFAULT_CODE_ARM_REQUIRED,
 }
-DEFAULT_ZONE_OPTIONS = {}
+DEFAULT_ZONE_OPTIONS: dict = {}
 
 DOMAIN = "alarmdecoder"
 
diff --git a/mypy.ini b/mypy.ini
index 1479bb7c700..0478be42acb 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -1062,9 +1062,6 @@ ignore_errors = true
 [mypy-homeassistant.components.aemet.*]
 ignore_errors = true
 
-[mypy-homeassistant.components.alarmdecoder.*]
-ignore_errors = true
-
 [mypy-homeassistant.components.alexa.*]
 ignore_errors = true
 
diff --git a/script/hassfest/mypy_config.py b/script/hassfest/mypy_config.py
index 013e52c0327..f0334aae8d6 100644
--- a/script/hassfest/mypy_config.py
+++ b/script/hassfest/mypy_config.py
@@ -16,7 +16,6 @@ from .model import Config, Integration
 IGNORED_MODULES: Final[list[str]] = [
     "homeassistant.components.adguard.*",
     "homeassistant.components.aemet.*",
-    "homeassistant.components.alarmdecoder.*",
     "homeassistant.components.alexa.*",
     "homeassistant.components.almond.*",
     "homeassistant.components.amcrest.*",