diff --git a/conductor/tracks/api_vendor_alignment_20260223/plan.md b/conductor/tracks/api_vendor_alignment_20260223/plan.md
index c0681e5..a0fd409 100644
--- a/conductor/tracks/api_vendor_alignment_20260223/plan.md
+++ b/conductor/tracks/api_vendor_alignment_20260223/plan.md
@@ -51,6 +51,6 @@ Ensure accurate token estimation and robust history handling.
     - [x] Implement Feature
 - [x] Task: Conductor - User Manual Verification 'Phase 4: History and Token Management' (Protocol in workflow.md)
 
-## Phase 5: Final Validation and Cleanup [checkpoint: 0f9f235]
+## Phase 5: Final Validation and Cleanup [checkpoint: e9126b4]
 - [x] Task: Perform a full test run using `run_tests.py` to ensure 100% pass rate.
 - [x] Task: Conductor - User Manual Verification 'Phase 5: Final Validation and Cleanup' (Protocol in workflow.md)