diff --git a/CLAUDE.md b/CLAUDE.md
index c068d60..474907b 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -70,3 +70,9 @@ Dashboard has a chart toggle (Both / Portfolio / 1-Year BTC) using tab state in
 - `purchases`: id, amount_eur, price_eur, created_at, user_id (FK)
 
 Database persists via Docker volume at `/app/data/btc_portfolio.db`.
+
+## Git Workflow
+
+- **Never work directly on `main`.** All development happens on `development` (or a feature branch).
+- After any merge/push to `main`, always switch back to `development` immediately.
+- `main` is only touched to merge in completed work from `development`.