diff --git a/README.md b/README.md
index 6d1b6e252..55972d2e0 100644
--- a/README.md
+++ b/README.md
@@ -283,6 +283,15 @@ Delete chart:
 helm delete bbgo
 ```
 
+## Development
+
+### Adding new migration
+
+```sh
+rockhopper --config rockhopper_sqlite.yaml create --type sql add_pnl_column
+rockhopper --config rockhopper_mysql.yaml create --type sql add_pnl_column
+```
+
 ## Support
 
 ### By contributing pull requests