diff --git a/docs/update.rst b/docs/update.rst
index 768d113946fa..70cefed7f662 100644
--- a/docs/update.rst
+++ b/docs/update.rst
@@ -5,6 +5,8 @@ Update
 
 To update the app you just need to copy over the latest code. The app tracks the current version in a file called version.txt, if it notices a change it loads ``/update`` to run the database migrations.
 
+If you're moving servers make sure to copy over the .env file.
+
 If the auto-update fails you can manually run the update with the following commands. Once completed add ``?clear_cache=true`` to the end of the URL to clear the application cache.
 
 .. code-block:: shell