diff --git a/.doc/ops/short-term/2026-09-22-engine-split.md b/.doc/ops/short-term/2026-09-22-engine-split.md
index 09fcd2c1..4d9fe470 100644
--- a/.doc/ops/short-term/2026-09-22-engine-split.md
+++ b/.doc/ops/short-term/2026-09-22-engine-split.md
@@ -16,7 +16,7 @@ write_scope:
   - ".doc/system-design/module-boundaries.yaml"
   - ".doc/ops/short-term/2026-09-22-engine-split.md"
 allowed_environments: []
-head_sha: "971bc159603cefcc60040e3aa48115fd63b8a9d2"
+head_sha: "834af6dd5989c064db82abaaef34e8416372b5ad"
 mutex: coordinator-engine-split
 review_state: pending
 integration_state: pending