diff --git a/scripts/upgrade b/scripts/upgrade
index 8e0072c..98d5fb3 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -244,6 +244,11 @@ ynh_app_setting_set $app project_version "$project_version"
 ynh_app_setting_set $app core_version "$core_version"
 ynh_app_setting_set $app ldap_version "$ldap_version"
 
+# Set files and directories permissions
+chmod 750 "$final_path"
+chmod -R o-rwx "$final_path"
+chown -R $app:www-data "$final_path"
+
 #=================================================
 # GENERIC FINALIZATION
 #=================================================