diff --git a/CHANGELOG.md b/CHANGELOG.md
index da7d7381..475667d8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,14 @@
 # master
 
+# 4.0.0
+
+* drop Node 4 support
+* test against Node 10
+* use version ranges for dependencies
+* use new testing API
+* add a service for using CSS variables in javascript
+* add a documentation website using the dummy app
+
 # 3.7.1
 
 * fix `this.options` collision
diff --git a/package.json b/package.json
index a5c5024c..f6613a05 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ember-cli-postcss",
-  "version": "3.7.1",
+  "version": "4.0.0",
   "description": "Use postcss to process your css with a large selection of JavaScript plug-ins.",
   "directories": {
     "doc": "doc",