diff --git a/packages/integrations/src/offline.ts b/packages/integrations/src/offline.ts
index 2168815a2f16..03f9949dde15 100644
--- a/packages/integrations/src/offline.ts
+++ b/packages/integrations/src/offline.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-unsafe-member-access */
 import { Event, EventProcessor, Hub, Integration } from '@sentry/types';
-import { getGlobalObject, logger, uuid4 } from '@sentry/utils';
+import { getGlobalObject, logger, normalize, uuid4 } from '@sentry/utils';
 import * as localForageType from 'localforage';
 
 // eslint-disable-next-line @typescript-eslint/no-var-requires
@@ -98,7 +98,7 @@ export class Offline implements Integration {
    * @param event an event
    */
   private async _cacheEvent(event: Event): Promise<Event> {
-    return this.offlineEventStore.setItem<Event>(uuid4(), event);
+    return this.offlineEventStore.setItem<Event>(uuid4(), normalize(event));
   }
 
   /**