diff --git a/server/src/external/mongo/indexes.ts b/server/src/external/mongo/indexes.ts
index ad1b12b22..ccf13fc3b 100644
--- a/server/src/external/mongo/indexes.ts
+++ b/server/src/external/mongo/indexes.ts
@@ -119,6 +119,7 @@ const staticIndexes: Partial<Record<Databases, Index[]>> = {
 	"arc-saved-profiles": [index({ userID: 1, forImportType: 1 }, UNIQUE)],
 	"score-blacklist": [index({ scoreID: 1 }, UNIQUE)],
 	migrations: [index({ migrationID: 1 }, UNIQUE)],
+	notifications: [index({ notifID: 1 }, UNIQUE), index({ sentTo: 1, sentAt: 1 })],
 };
 
 const indexes: Partial<Record<Databases, Index[]>> = staticIndexes;