diff --git a/backend/readmd.md b/backend/readmd.md
index 6e541ae..24278cd 100644
--- a/backend/readmd.md
+++ b/backend/readmd.md
@@ -2,5 +2,10 @@ DB migration
 https://supabase.com/docs/reference/cli/supabase-db-lint
 
 
-1. diff
-```supabase db diff -f [filename]```
\ No newline at end of file
+1. mannually create bucket
+2. diff db
+```supabase db diff -f [filename]```
+3. diff storage policy
+```supabase db diff --schema storage```
+
+