diff --git a/check_process b/check_process
index 0365448..5800f60 100644
--- a/check_process
+++ b/check_process
@@ -6,7 +6,7 @@
 		port="7777"	(PORT)
 	; Checks
 		pkg_linter=1
-		setup_sub_dir=0
+		setup_sub_dir=1
 		setup_root=1
 		setup_nourl=0
 		setup_private=1
@@ -14,21 +14,10 @@
 		upgrade=1
 		backup_restore=1
 		multi_instance=0
-		# incorrect_path=0
 		port_already_use=1
-		change_url=0
+		change_url=1
 ;;; Levels
-	Level 1=auto
-	Level 2=auto
-	Level 3=auto
-# Level 4: 
-	Level 4=na
 	Level 5=auto
-	Level 6=auto
-	Level 7=auto
-	Level 8=0
-	Level 9=0
-	Level 10=0
 ;;; Options
 Email=
 Notification=none
diff --git a/manifest.json b/manifest.json
index 69088ac..9fb931a 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
 		"en": "Open-source pastebin allowing to upload texts",
 		"fr": "Pastebin open-source permettant de mettre en ligne du texte"
 	},
-	"version": "0.1.0~ynh2",
+	"version": "0.1.0~ynh3",
 	"url": "https://github.com/seejohnrun/haste-server",
 	"license": "MIT",
 	"maintainer": {
@@ -14,7 +14,7 @@
 		"email": "maxime.bugeia@gmail.com"
 	},
 	"requirements": {
-		"yunohost": ">= 3.8.1"
+		"yunohost": ">= 4.0.0"
 	},
 	"multi_instance": false,
 	"services": [
diff --git a/scripts/change_url b/scripts/change_url
new file mode 100644
index 0000000..89ef6c9
--- /dev/null
+++ b/scripts/change_url
@@ -0,0 +1,124 @@
+#!/bin/bash
+
+#=================================================
+# GENERIC STARTING
+#=================================================
+# IMPORT GENERIC HELPERS
+#=================================================
+
+source _common.sh
+source /usr/share/yunohost/helpers
+
+#=================================================
+# RETRIEVE ARGUMENTS
+#=================================================
+
+old_domain=$YNH_APP_OLD_DOMAIN
+old_path=$YNH_APP_OLD_PATH
+
+new_domain=$YNH_APP_NEW_DOMAIN
+new_path=$YNH_APP_NEW_PATH
+
+app=$YNH_APP_INSTANCE_NAME
+
+#=================================================
+# LOAD SETTINGS
+#=================================================
+ynh_script_progression --message="Loading installation settings..." --weight=1
+
+# Needed for helper "ynh_add_nginx_config"
+final_path=$(ynh_app_setting_get --app=$app --key=final_path)
+port=$(ynh_app_setting_get --app=$app --key=port)
+
+#=================================================
+# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
+#=================================================
+ynh_script_progression --message="Backing up the app before changing its URL (may take a while)..." --weight=1
+
+# Backup the current version of the app
+ynh_backup_before_upgrade
+ynh_clean_setup () {
+	# Remove the new domain config file, the remove script won't do it as it doesn't know yet its location.
+	ynh_secure_remove --file="/etc/nginx/conf.d/$new_domain.d/$app.conf"
+
+	# restore it if the upgrade fails
+	ynh_restore_upgradebackup
+}
+# Exit if an error occurs during the execution of the script
+ynh_abort_if_errors
+
+#=================================================
+# CHECK WHICH PARTS SHOULD BE CHANGED
+#=================================================
+
+change_domain=0
+if [ "$old_domain" != "$new_domain" ]
+then
+	change_domain=1
+fi
+
+change_path=0
+if [ "$old_path" != "$new_path" ]
+then
+	change_path=1
+fi
+
+#=================================================
+# STANDARD MODIFICATIONS
+#=================================================
+# STOP SYSTEMD SERVICE
+#=================================================
+ynh_script_progression --message="Stopping a systemd service..." --weight=1
+
+ynh_systemd_action --service_name=$app --action="stop" --log_path="/var/log/$app/$app.log"
+
+#=================================================
+# MODIFY URL IN NGINX CONF
+#=================================================
+ynh_script_progression --message="Updating NGINX web server configuration..." --weight=2
+
+nginx_conf_path=/etc/nginx/conf.d/$old_domain.d/$app.conf
+
+# Change the path in the nginx config file
+if [ $change_path -eq 1 ]
+then
+	# Make a backup of the original nginx config file if modified
+	ynh_backup_if_checksum_is_different --file="$nginx_conf_path"
+	# Set global variables for nginx helper
+	domain="$old_domain"
+	path_url="$new_path"
+	# Create a dedicated nginx config
+	ynh_add_nginx_config
+fi
+
+# Change the domain for nginx
+if [ $change_domain -eq 1 ]
+then
+	# Delete file checksum for the old conf file location
+	ynh_delete_file_checksum --file="$nginx_conf_path"
+	mv $nginx_conf_path /etc/nginx/conf.d/$new_domain.d/$app.conf
+	# Store file checksum for the new config file location
+	ynh_store_file_checksum --file="/etc/nginx/conf.d/$new_domain.d/$app.conf"
+fi
+
+#=================================================
+# GENERIC FINALISATION
+#=================================================
+# START SYSTEMD SERVICE
+#=================================================
+ynh_script_progression --message="Starting a systemd service..." --weight=2
+
+ynh_systemd_action --service_name=$app --action="start" --log_path="/var/log/$app/$app.log"
+
+#=================================================
+# RELOAD NGINX
+#=================================================
+ynh_script_progression --message="Reloading NGINX web server..." --weight=1
+
+ynh_systemd_action --service_name=nginx --action=reload
+
+#=================================================
+# END OF SCRIPT
+#=================================================
+
+ynh_script_progression --message="Change of URL completed for $app" --last
diff --git a/scripts/upgrade b/scripts/upgrade
index 4db3213..56e241a 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -182,6 +182,12 @@ chown -R $app: "$final_path/static"
 chown -R $app: "$data_path"
 chmod +x /usr/bin/$app
 
+#=================================================
+# INTEGRATE SERVICE IN YUNOHOST
+#=================================================
+
+yunohost service add $app --description "Haste is an open-source pastebin software" --log "/var/log/$app/$app.log"
+
 #=================================================
 # START SYSTEMD SERVICE
 #=================================================