diff --git a/frontend/src/app/pages/Dashboard/hooks/interaction/wheelGestureOwner.ts b/frontend/src/app/pages/Dashboard/hooks/interaction/wheelGestureOwner.ts
index 6533cd29..d7446c1a 100644
--- a/frontend/src/app/pages/Dashboard/hooks/interaction/wheelGestureOwner.ts
+++ b/frontend/src/app/pages/Dashboard/hooks/interaction/wheelGestureOwner.ts
@@ -4,7 +4,7 @@
 // Holding it matters in BOTH directions, and only one direction used to exist. A scroll being served
 // by a scrollable surface stays there past that surface's end, so hitting the bottom of Settings
 // never chains into a canvas pan. And a pan the canvas already owns keeps flowing when it drifts
-// over an app window, instead of being swallowed mid-gesture (ENG-421).
+// over an app window, instead of being swallowed mid-gesture (ENG-420).
 
 export const GESTURE_GAP_MS = 220;
 
diff --git a/frontend/src/shared/state/deservesCanvasCard.test.ts b/frontend/src/shared/state/deservesCanvasCard.test.ts
index 03a9145b..b3ff2ae3 100644
--- a/frontend/src/shared/state/deservesCanvasCard.test.ts
+++ b/frontend/src/shared/state/deservesCanvasCard.test.ts
@@ -43,7 +43,7 @@ test('notifications are still a separate question from cards', () => {
   assert.equal(isUserLaunchedSession(run('running')), false);
 });
 
-// ENG-420: stopping a workflow-backed agent closed its whole card. Haik, production 1.7.9:
+// ENG-421: stopping a workflow-backed agent closed its whole card. Haik, production 1.7.9:
 // "Stop should mean stop, not close" -- you lose the transcript the moment you stop the run, which
 // is the thing you stopped it to read. The despawn rule could not tell "the nightly run finished"
 // from "a person pressed Stop", and it was written for the first one.
diff --git a/frontend/src/shared/state/isUserLaunchedSession.ts b/frontend/src/shared/state/isUserLaunchedSession.ts
index 29394bac..0413483b 100644
--- a/frontend/src/shared/state/isUserLaunchedSession.ts
+++ b/frontend/src/shared/state/isUserLaunchedSession.ts
@@ -36,7 +36,7 @@ export function isUserLaunchedSession(session: SessionOrigin): boolean {
  *
  * EXCEPT when a human stopped it. "Ends on its own" and "a person hit Stop" are different events and
  * this could not tell them apart, so pressing Stop on a workflow-backed agent made its card vanish
- * along with the transcript the user stopped it to read (ENG-420). Someone stops a run to LOOK at
+ * along with the transcript the user stopped it to read (ENG-421). Someone stops a run to LOOK at
  * it; the nightly-litter case it was written for is the one that ends by itself, which still
  * despawns. Close is what dismisses a card, and Close is the only route that stamps `closed_at`.
  */