diff --git a/SETUP.md b/SETUP.md
index 1ebf134162..acf778eccf 100644
--- a/SETUP.md
+++ b/SETUP.md
@@ -52,6 +52,8 @@ We provide a helper script which will create the development database `vault_dev
 .\dev\migrate.ps1 -r
 ```
 
+**Note:** If all or many migrations are skipped even though this is a new database, make sure that there is not a `last_migration` file located in `dev/.data/mssql`. If there is, remove it and run the helper script again. This can happen if you create the database, run migrations, then delete it.
+
 ### Azurite
 
 [Azurite](https://github.com/Azure/Azurite) is a emulator for Azure Storage API and supports Blob, Queues and Table storage. We use it to avoid a hard dependency on online services for cloud development.