diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4d48edc63..ab80bbea1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,19 @@
+v0.9.0
+======
+
+## New features
+
+- Add MimeTypeProvider to AzureBlobStorage (#630)
+
+## Fixes
+
+- Fix docker setup for dev env (#580)
+- Define env vars in .env file only (#615)
+- Add PHP Coding Standard check step on CI (#617)
+- PHPUnit tests enhancement (#627)
+
+Thank you @nicolasmure, @peter279k and @rgembalik for your contributions!
+
 v0.8.3
 ======
 
diff --git a/composer.json b/composer.json
index 7a6c8fe63..2f46e5df6 100644
--- a/composer.json
+++ b/composer.json
@@ -64,7 +64,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "0.9.x-dev"
+            "dev-master": "0.10.x-dev"
         }
     }
 }