diff --git a/Sources/YoutubeKit/enums,structs/Credentials.swift b/Sources/YoutubeKit/enums,structs/Credentials.swift
index da6fddf..05078af 100644
--- a/Sources/YoutubeKit/enums,structs/Credentials.swift
+++ b/Sources/YoutubeKit/enums,structs/Credentials.swift
@@ -10,7 +10,7 @@ import Foundation
 
 public extension YoutubeKit {
     // API系
-    struct APICredential{
+    struct APICredential: Serializable{
         let APIKey: String
         let clientID: String
         let clientSecret: String