diff --git a/Changelog.md b/Changelog.md
index 71f3c91..613959d 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -2,6 +2,15 @@
 
 The change log describes what is "Added", "Removed", "Changed" or "Fixed" between each release.
 
+## 4.0.0
+
+### Added
+
+- Merge `Translation\Compon\TransferableStorage` & `Translation\Common\Storage` interfaces into a new `Translation\Common\Storage\StorageInterface`.
+- Import `XliffConverter` from `php-translation/storage`.
+- Introduce a new `ChainStorage` to deal with several `StorageInterface`.
+- Add support for PHP 8 #40
+
 ## 3.0.1
 
 Added comments on the `TransferableStorage` interface to describe the options parameter.
diff --git a/composer.json b/composer.json
index 92f8fbd..a507de1 100644
--- a/composer.json
+++ b/composer.json
@@ -33,7 +33,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "3.0-dev"
+            "dev-master": "4.0-dev"
         }
     }
 }