diff --git a/packages/parser/src/schemas/s3.ts b/packages/parser/src/schemas/s3.ts
index 558776ffa5..ccc8fca155 100644
--- a/packages/parser/src/schemas/s3.ts
+++ b/packages/parser/src/schemas/s3.ts
@@ -72,8 +72,8 @@ const S3EventNotificationEventBridgeDetailSchema = z.object({
   }),
   object: z.object({
     key: z.string(),
-    size: z.number().nonnegative().optional(),
-    etag: z.string(),
+    size: z.number().nonnegative().optional(), // not present in DeleteObject events
+    etag: z.string().optional(), // not present in DeleteObject events
     'version-id': z.string().optional(),
     sequencer: z.string().optional(),
   }),
diff --git a/packages/parser/tests/events/s3EventBridgeNotificationObjectDeletedEvent.json b/packages/parser/tests/events/s3EventBridgeNotificationObjectDeletedEvent.json
index af52ee2fef..8006b93e40 100644
--- a/packages/parser/tests/events/s3EventBridgeNotificationObjectDeletedEvent.json
+++ b/packages/parser/tests/events/s3EventBridgeNotificationObjectDeletedEvent.json
@@ -16,8 +16,6 @@
     },
     "object": {
         "key": "IMG_m7fzo3.jpg",
-        "size": 184662,
-        "etag": "4e68adba0abe2dc8653dc3354e14c01d",
         "sequencer": "006408CAD69598B05E"
     },
     "request-id": "0BH729840619AG5K",