diff --git a/conf/config.json b/conf/config.json
index 1b77585..2acd288 100644
--- a/conf/config.json
+++ b/conf/config.json
@@ -11,12 +11,12 @@
   },
   "daemon": {
     "data": {
-      "cache": "/var/lib/__APP__/cache",
-      "servers": "/var/lib/__APP__/servers"
+      "cache": "__DATA_DIR__/cache",
+      "servers": "__DATA_DIR__/servers"
     }
   },
   "web": {
-  "host": "127.0.0.1:__PORT__"
+    "host": "127.0.0.1:__PORT__"
   },
   "panel": {
     "email": {
@@ -29,4 +29,4 @@
       "key": ""
     }
   }
-}
+}
\ No newline at end of file
diff --git a/doc/ADMIN.md b/doc/ADMIN.md
new file mode 100644
index 0000000..af60ee3
--- /dev/null
+++ b/doc/ADMIN.md
@@ -0,0 +1 @@
+Game server files are stored in `__DATA_DIR__`
diff --git a/manifest.toml b/manifest.toml
index 2179dc4..a79a9a8 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -7,7 +7,8 @@ description.fr = "Système de gestion de serveur de jeu"
 
 version = "2.6.9~ynh2"
 
-maintainers = [""]
+maintainers = [ "" ]
+
 
 [upstream]
 license = "Apache-2.0"
@@ -15,6 +16,7 @@ website = "https://www.pufferpanel.com/"
 admindoc = "https://docs.pufferpanel.com/en/latest/"
 code = "https://github.com/PufferPanel/PufferPanel"
 
+
 [integration]
 yunohost = ">= 11.2"
 architectures = "all"
@@ -25,6 +27,7 @@ disk = "50M"
 ram.build = "350M"
 ram.runtime = "50M"
 
+
 [install]
     [install.domain]
     type = "domain"
@@ -41,12 +44,16 @@ ram.runtime = "50M"
     [install.password]
     type = "password"
 
+
 [resources]
     [resources.system_user]
     allow_email = true
 
     [resources.install_dir]
 
+    [resources.data_dir]
+    subdirs = [ "binaries", "cache", "servers" ]
+
     [resources.ports]
 
     [resources.permissions]
@@ -62,4 +69,3 @@ ram.runtime = "50M"
 
     [resources.database]
     type = "postgresql"
-   
\ No newline at end of file
diff --git a/scripts/upgrade b/scripts/upgrade
index 66f3369..5d138c7 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -30,6 +30,18 @@ ynh_script_progression --message="Stopping a systemd service..."
 
 ynh_systemd_action --service_name="$app" --action="stop" --log_path="systemd"
 
+#=================================================
+# ENSURE DOWNWARD COMPATIBILITY
+#=================================================
+ynh_script_progression --message="Ensuring downward compatibility..."
+
+# moving the data folder to the standard ynh one
+if [ -d "/var/lib/$app" ]; then
+    ynh_print_info --message="Moving the data folder from '/var/lib/$app' to '$data_dir'"
+    mv "/var/lib/$app" "$data_dir"
+    ynh_secure_remove "/var/lib/$app"
+fi
+
 #=================================================
 # UPGRADE DEPENDENCIES
 #=================================================