diff --git a/src/backend/services/lotw.service.js b/src/backend/services/lotw.service.js
index b3c9699..35eadd3 100644
--- a/src/backend/services/lotw.service.js
+++ b/src/backend/services/lotw.service.js
@@ -656,6 +656,10 @@ export async function deleteQSOs(userId) {
 
   logger.info('Deleted QSOs', { userId, count, deletedChanges });
 
+  // Invalidate caches for this user
+  await invalidateStatsCache(userId);
+  await invalidateUserCache(userId);
+
   return count;
 }