diff --git a/src/lib/analytics/sleep-night.ts b/src/lib/analytics/sleep-night.ts
index 0b72448f9..70c57fd63 100644
--- a/src/lib/analytics/sleep-night.ts
+++ b/src/lib/analytics/sleep-night.ts
@@ -85,7 +85,7 @@
  * correct. Callers that want hours convert at the edge (`/ 60`).
  */
 import type { MeasurementSource, SleepStage } from "@/generated/prisma/client";
-import { userDayKey } from "@/lib/tz/resolver";
+import { userDayKey } from "@/lib/tz/format";
 import { summarize, type DataSummary } from "@/lib/analytics/trends";
 import {
   getSourceLadder,