diff --git a/index.js b/index.js
index 1847f3b..d0ead53 100644
--- a/index.js
+++ b/index.js
@@ -1,3 +1,4 @@
+var postcss = require("postcss")
 /**
  * 匹配自定义选择器
  * :--foo
@@ -8,20 +9,21 @@ var re_CUSTOM_SELECTOR = /([^,]*?)(:-{2,}[\w-]+)(.*)/g
 /**
  * 暴露插件
  */
-module.exports = customSelector
+module.exports = postcss.plugin("postcss-custom-selectors", function(options) {
+  /**
+   * 插件配置
+   */
+  options = options || {}
+  var extensions = options.extensions || {}
+  var line_break = '\n'
+  var map = {}
+  var toRemove = []
+  var customSelectors = {}
 
-/**
- * 读取和替换自定义选择器
- */
-function customSelector(options) {
+  /**
+   * 读取和替换自定义选择器
+   */
   return function(styles) {
-    options = options || {}
-    var extensions = options.extensions || {}
-    var line_break = '\n'
-    var map = {}
-    var toRemove = []
-    var customSelectors = {}
-
     // 读取自定义选择器
     styles.eachAtRule(function(rule) {
       if (rule.name !== "custom-selector") {
@@ -80,4 +82,4 @@ function customSelector(options) {
     })
 
   }
-}
+})
diff --git a/package.json b/package.json
index da70c74..c909227 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,8 @@
     "postcss",
     "postcss-plugins",
     "selector",
-    "custom-selector"
+    "custom-selector",
+    "custom selector"
   ],
   "author": "yisi",
   "license": "MIT",
@@ -23,8 +24,8 @@
     "index.js"
   ],
   "devDependencies": {
-    "postcss": "^3.0.0",
-    "tape": "^3.0.0"
+    "postcss": "^4.1.11",
+    "tape": "^4.0.0"
   },
   "scripts": {
     "test": "tape test"
diff --git a/test/index.js b/test/index.js
index 1b466a0..7816c0e 100644
--- a/test/index.js
+++ b/test/index.js
@@ -12,11 +12,11 @@ function compareFixtures(t, name, msg, opts, postcssOpts) {
   postcssOpts = postcssOpts || {}
   //input
   postcssOpts.from = filename("fixtures/" + name + "/input")
-  console.log('postcssOpts.from', postcssOpts.from)
   opts = opts || {}
   var actual = postcss()
   .use(plugin(opts))
-  .process(read(postcssOpts.from), postcssOpts).css
+  .process(read(postcssOpts.from), postcssOpts)
+  .css
   //output
   var output = read(filename("fixtures/" + name + "/output"))
   //actual