diff --git a/docs/asyncio_thread_safety.md b/docs/asyncio_thread_safety.md
index abe4ed93..59efa6e6 100644
--- a/docs/asyncio_thread_safety.md
+++ b/docs/asyncio_thread_safety.md
@@ -66,4 +66,8 @@ When removing a services from a thread other than the event loop thread, instead
 
 #### async_write_ha_state
 
-When writing the state of an entity from a thread other than the event loop thread, instead use `self.schedule_update_ha_state`
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+When writing the state of an entity from a thread other than the event loop thread, instead use `self.schedule_update_ha_state`
+
+#### hass.config_entries.async_update_entry
+
+Updating config entry must be done in the event loop thread. There is no sync API to update config entries. If it is not a mistake that the calling function is running in another thread, use `hass.add_job` to schedule a function in the event loop that calls `hass.config_entries.async_update_entry`.
\ No newline at end of file