diff --git a/README.md b/README.md
index 7171501..3cd29c2 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,7 @@
 
  - **latest** [(Dockerfile)](https://github.com/mondediefr/docker-flarum/blob/master/Dockerfile)
  - **stable** [(Dockerfile)](https://github.com/mondediefr/docker-flarum/blob/master/Dockerfile)
+ - **0.1.0-beta.15** [(Dockerfile)](https://github.com/mondediefr/docker-flarum/blob/0.1.0-beta.15/Dockerfile)
  - **0.1.0-beta.14.1** [(Dockerfile)](https://github.com/mondediefr/docker-flarum/blob/0.1.0-beta.14.1/Dockerfile)
  - **0.1.0-beta.14** [(Dockerfile)](https://github.com/mondediefr/docker-flarum/blob/0.1.0-beta.14/Dockerfile)
  - **0.1.0-beta.13** [(Dockerfile)](https://github.com/mondediefr/docker-flarum/blob/0.1.0-beta.13/Dockerfile)
@@ -19,13 +20,13 @@
 - Multi-platform image: `linux/386`, `linux/amd64`, `linux/arm/v6`, `linux/arm/v7`, `linux/arm64`
 - Lightweight & secure image
 - Based on Alpine Linux with **nginx** and **PHP 7.3**
-- Latest [Flarum Core](https://github.com/flarum/core) (v0.1.0-beta.14.1)
+- Latest [Flarum Core](https://github.com/flarum/core) (v0.1.0-beta.15)
 - MySQL/Mariadb driver
 - OPCache extension configured
 
 ### Build-time variables
 
-- **VERSION** = Version of [flarum/flarum](https://github.com/flarum/flarum) skeleton (default: *v0.1.0-beta.14*)
+- **VERSION** = Version of [flarum/flarum](https://github.com/flarum/flarum) skeleton (default: *v0.1.0-beta.15*)
 
 ### Ports
 
@@ -99,7 +100,7 @@ services:
       - mariadb
 
   mariadb:
-    image: mariadb:10.4
+    image: mariadb:10.5
     container_name: mariadb
     environment:
       - MYSQL_ROOT_PASSWORD=xxxxxxxxxx
diff --git a/UPGRADE.md b/UPGRADE.md
index 925fff3..4f2e0ae 100644
--- a/UPGRADE.md
+++ b/UPGRADE.md
@@ -1,5 +1,39 @@
 # Guide for upgrade your flarum container
 
+### Upgrade to v0.1.0-beta.15 from v0.1.0-beta.14.1
+
+:warning: Backup your database, config.php, composer.lock and assets folder  
+:warning: Disable all 3rd party extensions prior to upgrading in panel admin.
+
+1 - Update your docker-compose file, see an example [here](https://github.com/mondediefr/docker-flarum/tree/master#2---docker-composeyml)
+
+```yml
+version: "3"
+
+services:
+  flarum:
+    image: mondedie/flarum:0.1.0-beta.15
+    ...
+```
+
+2 - Pull the last docker images
+
+```sh
+docker pull mondedie/flarum:0.1.0-beta.15
+docker-compose stop flarum
+docker-compose rm flarum
+docker-compose up -d flarum
+```
+
+3 - Updating your database and removing old assets & extensions
+
+```sh
+docker exec -ti flarum php /flarum/app/flarum migrate
+docker exec -ti flarum php /flarum/app/flarum cache:clear
+```
+
+After that your upgrade is finish. :tada: :tada:
+
 ### Upgrade to v0.1.0-beta.14.1 from v0.1.0-beta.14
 
 :warning: Backup your database, config.php, composer.lock and assets folder