diff --git a/scripts/install b/scripts/install
index 5786c89..1a1f004 100755
--- a/scripts/install
+++ b/scripts/install
@@ -153,6 +153,8 @@ ynh_systemd_action --service_name=$app --action=start --log_path="systemd" --lin
 #=================================================
 ynh_script_progression --message="Configuring permissions..." --weight=3
 
+ynh_permission_url --permission="main" --auth_header="false"
+
 # Make app public if necessary
 if [ $is_public -eq 1 ]
 then
diff --git a/scripts/upgrade b/scripts/upgrade
index 535bc56..946d0ab 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -32,6 +32,8 @@ upgrade_type=$(ynh_check_app_version_changed)
 #=================================================
 ynh_script_progression --message="Ensuring downward compatibility..." --weight=1
 
+ynh_permission_url --permission="main" --auth_header="false"
+
 #=================================================
 # BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
 #=================================================