diff --git a/py/selenium/webdriver/common/actions/action_builder.py b/py/selenium/webdriver/common/actions/action_builder.py
index 211217edd7140..48859832de0e7 100644
--- a/py/selenium/webdriver/common/actions/action_builder.py
+++ b/py/selenium/webdriver/common/actions/action_builder.py
@@ -15,7 +15,8 @@
 # specific language governing permissions and limitations
 # under the License.
 
-from typing import Optional, Union
+
+from typing import Any, Optional, Union
 
 from selenium.webdriver.remote.command import Command
 
@@ -40,7 +41,7 @@ def __init__(
         mouse = mouse or PointerInput(interaction.POINTER_MOUSE, "mouse")
         keyboard = keyboard or KeyInput(interaction.KEY)
         wheel = wheel or WheelInput(interaction.WHEEL)
-        self.devices = [mouse, keyboard, wheel]
+        self.devices: list[Union[PointerInput, KeyInput, WheelInput]] = [mouse, keyboard, wheel]
         self._key_action = KeyActions(keyboard)
         self._pointer_action = PointerActions(mouse, duration=duration)
         self._wheel_action = WheelActions(wheel)
@@ -62,11 +63,11 @@ def get_device_with(self, name: str) -> Optional[Union["WheelInput", "PointerInp
 
     @property
     def pointer_inputs(self) -> list[PointerInput]:
-        return [device for device in self.devices if device.type == interaction.POINTER]
+        return [device for device in self.devices if isinstance(device, PointerInput)]
 
     @property
     def key_inputs(self) -> list[KeyInput]:
-        return [device for device in self.devices if device.type == interaction.KEY]
+        return [device for device in self.devices if isinstance(device, KeyInput)]
 
     @property
     def key_action(self) -> KeyActions:
@@ -159,7 +160,7 @@ def perform(self) -> None:
         >>> el = driver.find_element(id: "some_id")
         >>> action_builder.click(el).pause(keyboard).pause(keyboard).pause(keyboard).send_keys("keys").perform()
         """
-        enc = {"actions": []}
+        enc: dict[str, list[Any]] = {"actions": []}
         for device in self.devices:
             encoded = device.encode()
             if encoded["actions"]: