diff --git a/src/core/services/immersion-tracker/maintenance.ts b/src/core/services/immersion-tracker/maintenance.ts
index 69e144e0..29a076c1 100644
--- a/src/core/services/immersion-tracker/maintenance.ts
+++ b/src/core/services/immersion-tracker/maintenance.ts
@@ -139,7 +139,7 @@ function resetRollups(db: DatabaseSync): void {
 function upsertDailyRollupsForGroups(
   db: DatabaseSync,
   groups: Array<{ rollupDay: number; videoId: number }>,
-  rollupNowMs: bigint,
+  rollupNowMs: string,
 ): void {
   if (groups.length === 0) {
     return;
@@ -212,7 +212,7 @@ function upsertDailyRollupsForGroups(
 function upsertMonthlyRollupsForGroups(
   db: DatabaseSync,
   groups: Array<{ rollupMonth: number; videoId: number }>,
-  rollupNowMs: bigint,
+  rollupNowMs: string,
 ): void {
   if (groups.length === 0) {
     return;