diff --git a/homeassistant/components/smartthings/__init__.py b/homeassistant/components/smartthings/__init__.py
index 8136806cd0b..9bfa11d3293 100644
--- a/homeassistant/components/smartthings/__init__.py
+++ b/homeassistant/components/smartthings/__init__.py
@@ -28,6 +28,7 @@ from homeassistant.helpers.entity import Entity
 from homeassistant.helpers.event import async_track_time_interval
 from homeassistant.helpers.typing import ConfigType
 from homeassistant.loader import async_get_loaded_integration
+from homeassistant.setup import SetupPhases, async_pause_setup
 
 from .config_flow import SmartThingsFlowHandler  # noqa: F401
 from .const import (
@@ -170,7 +171,13 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
         )
 
         # Setup device broker
-        broker = DeviceBroker(hass, entry, token, smart_app, devices, scenes)
+        with async_pause_setup(hass, SetupPhases.WAIT_IMPORT_PLATFORMS):
+            # DeviceBroker has a side effect of importing platform
+            # modules when its created. In the future this should be
+            # refactored to not do this.
+            broker = await hass.async_add_import_executor_job(
+                DeviceBroker, hass, entry, token, smart_app, devices, scenes
+            )
         broker.connect()
         hass.data[DOMAIN][DATA_BROKERS][entry.entry_id] = broker