diff --git a/index.d.ts b/index.d.ts
index 221f43a..5ac9a17 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -60,5 +60,7 @@ declare namespace WebpackPwaManifest {
         sizes?: number[];
         destination?: string;
         ios?: boolean | 'default' | 'startup';
+        purpose?: string;
+        type?: string;
     }
-}
\ No newline at end of file
+}