diff --git a/.eslintrc b/.eslintrc
index c8a232b..db21f05 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -2,6 +2,9 @@
 # babel support more syntax stuff than eslint for now
 parser: babel-eslint
 
+root: true
+extends: eslint:recommended
+
 ecmaFeatures:
   modules: true
 
@@ -20,7 +23,6 @@ rules:
   brace-style: [2, "stroustrup"]
   comma-dangle: [2, "always-multiline"]
   comma-style: [2, "last"]
-  computed-property-spacing: [2, "never"]
   dot-location: [2, "property"]
 
   one-var: [2, "never"]
@@ -28,10 +30,13 @@ rules:
   prefer-const: [2]
   no-bitwise: [2]
 
-  object-shorthand: [2, "methods"]
+  object-curly-spacing: [2, "never"]
+  array-bracket-spacing: [2, "never"]
+  computed-property-spacing: [2, "never"]
+
+  space-unary-ops: [2, {"words": true, "nonwords": false}]
   space-after-keywords: [2, "always"]
   space-before-blocks: [2, "always"]
   space-before-function-paren: [2, "never"]
-  space-in-brackets: [2, "never"]
   space-in-parens: [2, "never"]
-  spaced-line-comment: [2, "always"]
+  spaced-comment: [2, "always"]
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3d24638..0fbb5e6 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+# 2.0.0 - 2015-08-25
+
+- Removed: compatibility with postcss v4.x
+- Added: compatibility with postcss v5.x
+
 # 1.2.1 - 2015-06-16
 
 - Fixed: selector was updated as an array, which is wrong.
diff --git a/package.json b/package.json
index 5ab0d5c..6f6441f 100644
--- a/package.json
+++ b/package.json
@@ -1,9 +1,10 @@
 {
   "name": "postcss-selector-not",
-  "version": "1.2.1",
+  "version": "2.0.0",
   "description": "PostCSS plugin to transform :not() W3C CSS leve 4 pseudo class to :not() CSS level 3 selectors",
   "keywords": [
     "postcss",
+    "postcss-plugin",
     "selectors",
     "selector",
     "Not"
@@ -14,25 +15,19 @@
     "type": "git",
     "url": "https://github.com/postcss/postcss-selector-not.git"
   },
-  "homepage": "https://github.com/postcss/postcss-selector-not",
-  "bugs": {
-    "url": "https://github.com/postcss/postcss-selector-not/issues"
-  },
+  "main": "dist/index.js",
   "files": [
-    "CHANGELOG.md",
-    "LICENSE",
     "dist"
   ],
-  "main": "dist/index.js",
   "dependencies": {
     "balanced-match": "^0.2.0",
-    "postcss": "^4.1.7"
+    "postcss": "^5.0.0"
   },
   "devDependencies": {
     "babel": "^5.1.13",
     "babel-eslint": "^3.1.15",
     "babel-tape-runner": "^1.1.0",
-    "eslint": "^0.23.0",
+    "eslint": "^1.0.0",
     "tape": "^4.0.0"
   },
   "scripts": {
diff --git a/src/index.js b/src/index.js
index 38a61d5..b6f1530 100644
--- a/src/index.js
+++ b/src/index.js
@@ -26,7 +26,7 @@ function explodeSelector(pseudoClass, selector) {
 function explodeSelectors(pseudoClass) {
   return () => {
     return (css) => {
-      css.eachRule(rule => {
+      css.walkRules(rule => {
         if (rule.selector && rule.selector.indexOf(pseudoClass) > -1) {
           rule.selector = explodeSelector(pseudoClass, rule.selector)
         }