diff --git a/scripts/upgrade b/scripts/upgrade
index 82142db..0f4285c 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -76,6 +76,10 @@ then
 	ynh_setup_source --dest_dir="$final_path"
 fi
 
+chmod 750 "$final_path"
+chmod -R o-rwx "$final_path"
+chown -R $app:www-data "$final_path"
+
 #=================================================
 # PHP-FPM CONFIGURATION
 #=================================================