diff --git a/CHANGELOG.md b/CHANGELOG.md
index 19bd14a..2fad927 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,15 @@
 
 
+## v4.0.0 - 2016-08-25
+- Release v4.0.0 / npm@v4.0.0
+- update travis builds, update docs
+- replace `assertit` it with `mukla`
+- breaking: remove `bluebird` from dependencies
+
+Throws if not native Promise support and not `Promize` were given and not `bluebird` were found. So if you wanna have Promise in `node@0.10` or such, you should install `bluebird` as `devDependency` or to pass some Promise implementation to that package.
+
+It is removed, because `bluebird` is huge as `kb` and it will be there always, no matter if your environment have support for native Promise.
+
 ## v3.0.1 - 2015-09-29
 - Release v3.0.1 / npm@v3.0.1
 - fix/update tests - ensure properties exists and works on 0.10
diff --git a/package.json b/package.json
index 314f17d..3cd7bdf 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "native-or-another",
-  "version": "3.0.2",
+  "version": "4.0.0",
   "description": "Always will expose native `Promise` if available, otherwise `Bluebird` but only if you don't give another promise module like `q` or `promise` or what you want.",
   "repository": "tunnckoCore/native-or-another",
   "author": "Charlike Mike Reagent <@tunnckoCore> (http://www.tunnckocore.tk)",