diff --git a/.npmrc b/.npmrc
new file mode 100644
index 0000000..43c97e7
--- /dev/null
+++ b/.npmrc
@@ -0,0 +1 @@
+package-lock=false
diff --git a/.travis.yml b/.travis.yml
index d276213..ddbc366 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,6 @@
 language: node_js
 node_js:
-- "4"
-- "6"
 - "8"
 - "10"
+- "12"
 - "node"
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..bf104e4
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,7 @@
+# postcss-prefix change log
+All notable changes to this project will be documented in this file.
+This project adheres to [Semantic Versioning](http://semver.org/).
+
+## 3.0.0
+* Update to the postcss 8 plugin API.
+* Require Node.js 8+.
diff --git a/README.md b/README.md
index f220070..eda7f89 100644
--- a/README.md
+++ b/README.md
@@ -11,8 +11,7 @@ const css = `
   .hello { color: black }
 `
 
-const newCss = postcss()
-  .use(prefix('#hello-world'))
+const newCss = postcss([ prefix('#hello-world') ])
   .process(css)
   .toString()
 
diff --git a/index.js b/index.js
index d855ad5..4d07ff9 100644
--- a/index.js
+++ b/index.js
@@ -3,17 +3,19 @@
 const postcss = require('postcss')
 const Selector = require('postcss-selector-parser')
 
-module.exports = postcss.plugin('postcss-prefix', postcssPrefix)
+module.exports = postcssPrefix
+postcssPrefix.postcss = true
 
 function postcssPrefix (prefix, options) {
   options = options || {}
 
-  return function walk (root) {
-    root.walkRules(function (rule) {
+  return {
+    postcssPlugin: 'postcss-prefix',
+    Rule: function (rule) {
       const selector = Selector(transformSelectors)
         .processSync(rule.selector)
       rule.selector = selector
-    })
+    }
   }
 
   function transformSelectors (selectors) {
diff --git a/package.json b/package.json
index 27e0097..73ff10b 100644
--- a/package.json
+++ b/package.json
@@ -1,15 +1,20 @@
 {
   "name": "postcss-prefix",
-  "version": "2.2.0",
-  "license": "MIT",
-  "repository": "stackcss/postcss-prefix",
+  "description": "Replace `:host` elements with a prefix of your choosing",
+  "version": "3.0.0",
+  "author": "Hugh Kennedy <hughskennedy@gmail.com>",
+  "bugs": "https://github.com/stackcss/postcss-prefix/issues",
   "dependencies": {
-    "postcss": "^5.0.8",
-    "postcss-selector-parser": "^4.0.0"
+    "postcss-selector-parser": "^6.0.2"
   },
   "devDependencies": {
-    "tape": "^4.2.1"
+    "postcss": "^8.0.5",
+    "tape": "^5.0.1"
   },
+  "homepage": "https://github.com/stackcss/postcss-prefix",
+  "license": "MIT",
+  "main": "index.js",
+  "repository": "stackcss/postcss-prefix",
   "scripts": {
     "test": "tape test/index.js"
   }