diff --git a/CHANGELOG.md b/CHANGELOG.md
index d5485b3..7cb4e16 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## [Unreleased][]
 
+## [4.0.0][] - 2020-10-20
+
 ### Changed
 
 -   Properly export plugin function
@@ -16,3 +18,6 @@
 [unreleased]:
 	https://github.com/niksy/postcss-em-media-query/compare/v3.0.0...HEAD
 [3.0.0]: https://github.com/niksy/postcss-em-media-query/tree/v3.0.0
+[unreleased]:
+	https://github.com/niksy/postcss-em-media-query/compare/v4.0.0...HEAD
+[4.0.0]: https://github.com/niksy/postcss-em-media-query/tree/v4.0.0
diff --git a/package.json b/package.json
index 2f88919..c92e6f9 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "postcss-em-media-query",
-  "version": "3.0.0",
+  "version": "4.0.0",
   "description": "PostCSS plugin for transforming min/max-width/height media queries to ems.",
   "main": "index.cjs.js",
   "module": "index.esm.js",