diff --git a/dist/gkd.json b/dist/gkd.json
index 30daa100..553158ec 100644
--- a/dist/gkd.json
+++ b/dist/gkd.json
@@ -1,6 +1,7 @@
 {
-  "name": "GKD官方订阅",
-  "version": 6,
+  "id": 0,
+  "name": "默认订阅",
+  "version": 7,
   "author": "lisonge",
   "supportUrl": "https://github.com/gkd-kit/subscription",
   "apps": [
diff --git a/package.json b/package.json
index 1e05efba..75cdc251 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@gkd-kit/subscription",
   "type": "module",
-  "version": "0.0.6",
+  "version": "0.0.7",
   "main": "./dist/gkd.json",
   "unpkg": "./dist/gkd.json",
   "jsdelivr": "./dist/gkd.json",
diff --git a/src/file.ts b/src/file.ts
index 856c4ff2..a7a45cab 100644
--- a/src/file.ts
+++ b/src/file.ts
@@ -78,6 +78,7 @@ export const writeConfig = async (fp: string, config: SubscriptionConfig) => {
   });
 
   const sortKeys: (keyof SubscriptionConfig)[] = [
+    `id`,
     `name`,
     `version`,
     `author`,
diff --git a/src/main.ts b/src/main.ts
index 07552a05..c8d782bd 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -12,7 +12,8 @@ for await (const tsFp of walk(relativePath('./apps'))) {
 apps.sort((a, b) => (a.id > b.id ? 1 : -1));
 
 await writeConfig(`../dist/gkd.json`, {
-  name: `GKD官方订阅`,
+  id: 0,
+  name: `默认订阅`,
   author: `lisonge`,
   supportUrl: `https://github.com/gkd-kit/subscription`,
   apps,
diff --git a/src/types.ts b/src/types.ts
index 3492a66a..a66c65e7 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -56,20 +56,26 @@ type RuleConfig = {
 } & CommonProps;
 
 export type SubscriptionConfig = {
-  name?: string;
+  /**
+   * 当前订阅文件的标识, 如果新旧订阅文件id不一致则更新失败\
+   * 范围: `[-Number.MAX_SAFE_INTEGER, Number.MAX_SAFE_INTEGER]`\
+   * 建议值: `new Date().getTime()`
+   */
+  id: number;
+  name: string;
   version?: number;
-  author?: string;
+  author: string;
   /**
    * https url
    * android file path
    */
   updateUrl?: string;
   /**
-   * https url
+   * https url\
    * android schema url, qq group
    */
   supportUrl?: string;
-  apps?: AppConfig[];
+  apps: AppConfig[];
 };
 
 export const defineSubsConfig = (config: SubscriptionConfig) => {