diff --git a/PLAN.md b/PLAN.md
index ac1f4b8..3348ea3 100644
--- a/PLAN.md
+++ b/PLAN.md
@@ -183,7 +183,7 @@ Check off items as completed. Each phase builds on the previous.
 - [x] Add sell_product to services/products.py
 - [x] Calculate unit_price_cents = floor(total/qty)
 - [x] Write tests: event stored, unit price calculated
-- [x] **Commit checkpoint**
+- [x] **Commit checkpoint** (b48fab5)
 
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