diff --git a/engagement-triggers.json b/engagement-triggers.json
index 423c067..6acee4e 100644
--- a/engagement-triggers.json
+++ b/engagement-triggers.json
@@ -1,6 +1,6 @@
 {
   "_comment": "Generated freeze of module-rust's engagement contract (docs/modules/rust/PLAN.md §25). Regenerate with `npm run engagement:manifest` in server/. A renamed variable, a changed type or a widened ceiling breaks stored templates and rules, so the diff here is the review signal.",
-  "coreApi": "^1.20.0",
+  "coreApi": "^1.21.0",
   "triggers": [
     {
       "id": "rust.base.destroyed",