diff --git a/scripts/upgrade b/scripts/upgrade
index 1c53880..50ffafc 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -60,6 +60,14 @@ if ynh_legacy_permissions_exists; then
 	ynh_app_setting_delete --app=$app --key=is_public
 fi
 
+#=================================================
+# CREATE DEDICATED USER
+#=================================================
+ynh_script_progression --message="Making sure dedicated system user exists..."
+
+# Create a dedicated user (if not existing)
+ynh_system_user_create --username=ynh_$app --home_dir="$final_path"
+
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================