diff --git a/index.d.ts b/index.d.ts
index 9a596c8e..2c9d42e7 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -14,7 +14,7 @@ declare module "react-native-background-upload" {
 
     export interface CompletedData extends EventData {
 
-        responseCode: string
+        responseCode: number
         responseBody: string
     }
     export type FileInfo = {