diff --git a/april_vision/detect_cameras.py b/april_vision/detect_cameras.py
index b5aa8dd..e40eae9 100644
--- a/april_vision/detect_cameras.py
+++ b/april_vision/detect_cameras.py
@@ -212,9 +212,9 @@ def windows_discovery() -> List[CameraIdentifier]:
     """
     import asyncio
 
-    assert sys.platform != 'win32', "This method is only for Windows"
+    assert sys.platform == 'win32', "This method is only for Windows"
 
-    import winsdk.windows.devices.enumeration as windows_devices  # type: ignore[import, unused-ignore] # noqa: E501
+    import winsdk.windows.devices.enumeration as windows_devices  # type: ignore[import-not-found,unused-ignore]
 
     async def get_camera_info():  # type: ignore
         device_class = windows_devices.DeviceClass.VIDEO_CAPTURE
diff --git a/pyproject.toml b/pyproject.toml
index d9b3187..151abba 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,7 +30,7 @@ dependencies = [
 dev = [
     "poethepoet >=0.0.1,<1",
     "ruff >=0.3.0,<0.4",
-    "mypy",
+    "mypy==1.9.0",
     "build",
     "types-Pillow",
     "types-tabulate",