diff --git a/includes/class-wc-countries.php b/includes/class-wc-countries.php
index 4d63ca84c17..f5f818e1913 100644
--- a/includes/class-wc-countries.php
+++ b/includes/class-wc-countries.php
@@ -118,6 +118,7 @@ class WC_Countries {
 			'KR' => array(),
 			'KW' => array(),
 			'LB' => array(),
+			'LU' => array(),
 			'MQ' => array(),
 			'NL' => array(),
 			'NO' => array(),
@@ -1096,6 +1097,11 @@ class WC_Countries {
 							'required' => false,
 						),
 					),
+					'LU' => array(
+						'state' => array(
+							'required' => false,
+						),
+					),
 					'MD' => array(
 						'state' => array(
 							'label' => __( 'Municipality / District', 'woocommerce' ),