diff --git a/phases/linear-static-3d-euler-beam/index.json b/phases/linear-static-3d-euler-beam/index.json
index 1ad7eb9..b7b5702 100644
--- a/phases/linear-static-3d-euler-beam/index.json
+++ b/phases/linear-static-3d-euler-beam/index.json
@@ -45,7 +45,10 @@
     {
       "step": 5,
       "name": "reference-model-contract",
-      "status": "pending"
+      "status": "completed",
+      "started_at": "2026-08-09T03:16:25+0900",
+      "summary": "code·analytical·B33 reference 검증을 분리하고 analytical/invalid model inventory와 read-only legacy 4-file provenance·schema·tolerance coverage를 계약화함",
+      "completed_at": "2026-08-09T03:29:44+0900"
     },
     {
       "step": 6,