diff --git a/conductor/tracks/data_oriented_error_handling_20260606/state.toml b/conductor/tracks/data_oriented_error_handling_20260606/state.toml
index 22232a28..8aba0c7c 100644
--- a/conductor/tracks/data_oriented_error_handling_20260606/state.toml
+++ b/conductor/tracks/data_oriented_error_handling_20260606/state.toml
@@ -24,7 +24,7 @@ phase_2 = { status = "completed", checkpoint_sha = "b144450b", name = "mcp_clien
 # Phase 3: ai_client.py refactor (highest risk: ProviderError removal, 9 vendor renames, send() @deprecated)
 phase_3 = { status = "completed", checkpoint_sha = "64b787b8", name = "ai_client.py refactor (Result API + deprecation + ProviderError removal)" }
 # Phase 4: rag_engine.py refactor
-phase_4 = { status = "completed", checkpoint_sha = "<task_4.5_commit_sha>", name = "rag_engine.py refactor (Result + NilRAGState)" }
+phase_4 = { status = "completed", checkpoint_sha = "9b582e2c", name = "rag_engine.py refactor (Result + NilRAGState)" }
 # Phase 5: Deprecation wiring + docs + integration
 phase_5 = { status = "pending", checkpoint_sha = "", name = "Deprecation wiring + docs + integration + archive" }