diff --git a/check_process b/check_process
index 3de3894..8fcde4f 100644
--- a/check_process
+++ b/check_process
@@ -14,5 +14,4 @@
 		upgrade=1
 		backup_restore=1
 		multi_instance=1
-		incorrect_path=1
 		port_already_use=0
diff --git a/manifest.json b/manifest.json
index 9f26658..b71fd85 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,19 +6,19 @@
         "en": "Minimalist web chat",
         "fr": "Web chat minimaliste"
     },
-    "version": "1.0~ynh2",
+    "version": "1.0~ynh3",
     "url": "https://github.com/wojtek77/chat",
     "license": "MIT",
     "maintainer": {
         "name": "chtixof"
     },
      "requirements": {
-        "yunohost": ">> 3.8.1"
+        "yunohost": ">> 4.1.7"
     },
     "multi_instance": true,
     "services": [
         "nginx",
-        "php7.0-fpm"
+        "php7.3-fpm"
     ],
     "arguments": {
         "install" : [
diff --git a/scripts/install b/scripts/install
index 4bc5e8b..4dfd6e4 100644
--- a/scripts/install
+++ b/scripts/install
@@ -47,7 +47,6 @@ ynh_script_progression --message="Storing installation settings..." --weight=1
 
 ynh_app_setting_set --app=$app --key=domain --value=$domain
 ynh_app_setting_set --app=$app --key=path --value=$path_url
-ynh_app_setting_set --app=$app --key=is_public --value=$is_public
 
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
@@ -79,7 +78,7 @@ ynh_system_user_create --username=$app
 #=================================================
 ynh_script_progression --message="Configuring PHP-FPM..." --weight=1
 
-ynh_add_fpm_config --phpversion=$YNH_PHP_VERSION
+ynh_add_fpm_config
 phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)
 
 #=================================================
@@ -94,12 +93,12 @@ chown -R $app: $final_path
 #=================================================
 # SETUP SSOWAT
 #=================================================
-ynh_script_progression --message="Configuring SSOwat..." --weight=3
+ynh_script_progression --message="Configuring permissions..." --weight=3
 
 # Make app public if necessary or protect it
 if [ $is_public -eq 1 ]
 then
-	ynh_permission_update --permission "main" --add "visitors"
+	ynh_permission_update --permission="main" --add="visitors"
 fi
 
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index 9ccd45b..db333d0 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -18,7 +18,6 @@ app=$YNH_APP_INSTANCE_NAME
 
 domain=$(ynh_app_setting_get --app=$app --key=domain)
 path_url=$(ynh_app_setting_get --app=$app --key=path)
-is_public=$(ynh_app_setting_get --app=$app --key=is_public)
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 
 #=================================================
@@ -47,6 +46,13 @@ if [ -z "$final_path" ]; then
 	ynh_app_setting_set --app=$app --key=final_path --value=$final_path
 fi
 
+# Cleaning legacy permissions
+if ynh_legacy_permissions_exists; then
+	ynh_legacy_permissions_delete_all
+
+	ynh_app_setting_delete --app=$app --key=is_public
+fi
+
 #=================================================
 # BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
 #=================================================