diff --git a/tests/components/broadlink/__init__.py b/tests/components/broadlink/__init__.py
index 61ef27815fd..207014d0958 100644
--- a/tests/components/broadlink/__init__.py
+++ b/tests/components/broadlink/__init__.py
@@ -115,18 +115,27 @@ class BroadlinkDevice:
     """Representation of a Broadlink device."""
 
     def __init__(
-        self, name, host, mac, model, manufacturer, type_, devtype, fwversion, timeout
-    ):
+        self,
+        name: str,
+        host: str,
+        mac: str,
+        model: str,
+        manufacturer: str,
+        type_: str,
+        devtype: int,
+        fwversion: int,
+        timeout: int,
+    ) -> None:
         """Initialize the device."""
-        self.name: str = name
-        self.host: str = host
-        self.mac: str = mac
-        self.model: str = model
-        self.manufacturer: str = manufacturer
-        self.type: str = type_
-        self.devtype: int = devtype
-        self.timeout: int = timeout
-        self.fwversion: int = fwversion
+        self.name = name
+        self.host = host
+        self.mac = mac
+        self.model = model
+        self.manufacturer = manufacturer
+        self.type = type_
+        self.devtype = devtype
+        self.timeout = timeout
+        self.fwversion = fwversion
 
     async def setup_entry(self, hass, mock_api=None, mock_entry=None):
         """Set up the device."""
diff --git a/tests/components/ffmpeg/test_init.py b/tests/components/ffmpeg/test_init.py
index 353b8fdfcc0..ceefed8d62b 100644
--- a/tests/components/ffmpeg/test_init.py
+++ b/tests/components/ffmpeg/test_init.py
@@ -54,7 +54,12 @@ def async_restart(hass, entity_id=None):
 class MockFFmpegDev(ffmpeg.FFmpegBase):
     """FFmpeg device mock."""
 
-    def __init__(self, hass, initial_state=True, entity_id="test.ffmpeg_device"):
+    def __init__(
+        self,
+        hass: HomeAssistant,
+        initial_state: bool = True,
+        entity_id: str = "test.ffmpeg_device",
+    ) -> None:
         """Initialize mock."""
         super().__init__(None, initial_state)
 
diff --git a/tests/components/recorder/test_init.py b/tests/components/recorder/test_init.py
index 3cd4c3ab4b6..c8e58d58105 100644
--- a/tests/components/recorder/test_init.py
+++ b/tests/components/recorder/test_init.py
@@ -2322,7 +2322,7 @@ async def test_connect_args_priority(hass: HomeAssistant, config_url) -> None:
         __bases__ = []
         _has_events = False
 
-        def __init__(*args, **kwargs): ...
+        def __init__(self, *args: Any, **kwargs: Any) -> None: ...
 
         @property
         def is_async(self):
diff --git a/tests/components/siren/test_init.py b/tests/components/siren/test_init.py
index 168300d0abe..475b32540b4 100644
--- a/tests/components/siren/test_init.py
+++ b/tests/components/siren/test_init.py
@@ -27,7 +27,7 @@ class MockSirenEntity(SirenEntity):
         supported_features=0,
         available_tones_as_attr=None,
         available_tones_in_desc=None,
-    ):
+    ) -> None:
         """Initialize mock siren entity."""
         self._attr_supported_features = supported_features
         if available_tones_as_attr is not None: