diff --git a/src/events/gm/sprite/Update.ts b/src/events/gm/sprite/Update.ts
index 7319d93..9d3cb04 100644
--- a/src/events/gm/sprite/Update.ts
+++ b/src/events/gm/sprite/Update.ts
@@ -6,7 +6,7 @@ import path from 'path'
 import fs from 'fs'
 
 type uploadSpriteImage = SpriteImage & {
-  base64: string
+  base64?: string
 }
 
 type Payload = {