diff --git a/src/types/message.ts b/src/types/message.ts
index ba1459f72..1041ce5d9 100644
--- a/src/types/message.ts
+++ b/src/types/message.ts
@@ -32,9 +32,9 @@ export interface Attachment {
   /** A proxied url of file */
   proxy_url: string;
   /** The height of file if an image */
-  height: number | null;
+  height?: number | null;
   /** The width of the file if an image */
-  width: number | null;
+  width?: number | null;
 }
 
 export interface Embed {