diff --git a/.github/workflows/validate.yml b/.github/workflows/validate.yml
index 6eda51a..b0bf8a1 100644
--- a/.github/workflows/validate.yml
+++ b/.github/workflows/validate.yml
@@ -40,6 +40,6 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with: { python-version: "3.13" }
-      - run: pip install pytest voluptuous pytest-homeassistant-custom-component
+      - run: pip install pytest voluptuous pytest-homeassistant-custom-component home-assistant-frontend
       - name: Backend unit tests (pure + HA harness)
         run: python -m pytest tests_backend/ -q
diff --git a/tests_backend/test_ha_websocket.py b/tests_backend/test_ha_websocket.py
index f087c48..917c77e 100644
--- a/tests_backend/test_ha_websocket.py
+++ b/tests_backend/test_ha_websocket.py
@@ -69,10 +69,10 @@ async def test_config_rev_conflict(hass: HomeAssistant, hass_ws_client: WebSocke
 
 async def test_not_ready_without_entry(hass: HomeAssistant, hass_ws_client: WebSocketGenerator) -> None:
     """WS commands answer not_ready when the integration has no loaded entry."""
-    # register commands without setting up an entry
-    from custom_components.houseplan import async_setup
+    # register only the WS commands, without an entry
+    from custom_components.houseplan import websocket_api as hp_ws
 
-    assert await async_setup(hass, {})
+    hp_ws.async_register(hass)
     client = await hass_ws_client(hass)
     await client.send_json_auto_id({"type": "houseplan/layout/get"})
     resp = await client.receive_json()