diff --git a/README.md b/README.md
index 763aaeb..c2c04c9 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # vue-observer-directive
 
-通过[`window.IntersectionObserver`](https://developer.mozilla.org/zh-CN/docs/Web/API/IntersectionObserver)判断DOM是否在视口展示，在Vue自定义指令中进行方法执行。
+通过[`window.IntersectionObserver`](https://developer.mozilla.org/zh-CN/docs/Web/API/IntersectionObserver)判断DOM是否在视口展示，在Vue@2自定义指令中进行方法执行。
 
 1. npm：<https://www.npmjs.com/package/vue-observer-directive>
 2. demo：<https://realgeoffrey.github.io/vue-observer-directive/demo/index.html>
@@ -14,7 +14,7 @@
 2. 浏览器引用
 
     ```html
-    <!-- 需要先引入vue：<script src="//unpkg.com/vue"></script> -->
+    <!-- 需要先引入vue：<script src="//unpkg.com/vue@2"></script> -->
     <script src="//unpkg.com/vue-observer-directive"></script>
     ```
 
@@ -48,7 +48,7 @@
     1. 全局注册
 
         ```html
-        <!-- 需要先引入vue：<script src="//unpkg.com/vue"></script> -->
+        <!-- 需要先引入vue：<script src="//unpkg.com/vue@2"></script> -->
         <!-- 需要先引入vue-observer-directive：<script src="//unpkg.com/vue-observer-directive"></script> -->
 
         <script>
@@ -60,7 +60,7 @@
     2. 局部注册
 
         ```html
-        <!-- 需要先引入vue：<script src="//unpkg.com/vue"></script> -->
+        <!-- 需要先引入vue：<script src="//unpkg.com/vue@2"></script> -->
         <!-- 需要先引入vue-observer-directive：<script src="//unpkg.com/vue-observer-directive"></script> -->
 
         <script>
diff --git a/demo/index.html b/demo/index.html
index f77a565..7b622d7 100644
--- a/demo/index.html
+++ b/demo/index.html
@@ -52,7 +52,7 @@
     </p>
   </div>
 
-  <script src="//unpkg.com/vue"></script>
+  <script src="//unpkg.com/vue@2"></script>
   <script src="//unpkg.com/vue-observer-directive"></script>
   <!-- <script src="../dist/vue-observer-directive.iife.js"></script> -->
 
diff --git a/package.json b/package.json
index 00be6c9..8558f2f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "vue-observer-directive",
-  "description": "使用 IntersectionObserver 进行是否展示 DOM 判断（Vue自定义指令）",
+  "description": "使用 IntersectionObserver 进行是否展示 DOM 判断（Vue@2自定义指令）",
   "repository": {
     "type": "git",
     "url": "git@github.com:realgeoffrey/vue-observer-directive.git"
@@ -33,5 +33,5 @@
     "rollup-plugin-commonjs": "^10.1.0",
     "rollup-plugin-terser": "^5.1.2"
   },
-  "version": "1.2.4"
+  "version": "1.2.5"
 }