diff --git a/i18n/states.php b/i18n/states.php
index 56f01021835..ae89a51fe94 100644
--- a/i18n/states.php
+++ b/i18n/states.php
@@ -1485,32 +1485,39 @@ return array(
 		'TZ30' => __( 'Simiyu', 'woocommerce' ),
 	),
 	'LK' => array(),
-	'RS' => array( // Serbia districts. Ref: http://www.statoids.com/urs.html
-		'BG' => _x( 'Belgrade', 'district', 'woocommerce' ),
-		'BO' => _x( 'Bor', 'district', 'woocommerce' ),
-		'BR' => _x( 'Braničevo', 'district', 'woocommerce' ),
-		'SD' => _x( 'Central Banat', 'district', 'woocommerce' ),
-		'PD' => _x( 'Danube', 'district', 'woocommerce' ),
-		'JA' => _x( 'Jablanica', 'district', 'woocommerce' ),
-		'KB' => _x( 'Kolubara', 'district', 'woocommerce' ),
-		'MA' => _x( 'Mačva', 'district', 'woocommerce' ),
-		'MR' => _x( 'Morava', 'district', 'woocommerce' ),
-		'NS' => _x( 'Nišava', 'district', 'woocommerce' ),
-		'SC' => _x( 'North Bačka', 'district', 'woocommerce' ),
-		'SN' => _x( 'North Banat', 'district', 'woocommerce' ),
-		'PC' => _x( 'Pčinja', 'district', 'woocommerce' ),
-		'PI' => _x( 'Pirot', 'district', 'woocommerce' ),
-		'PM' => _x( 'Pomoravlje', 'district', 'woocommerce' ),
-		'RN' => _x( 'Rasina', 'district', 'woocommerce' ),
-		'RS' => _x( 'Raška', 'district', 'woocommerce' ),
-		'JC' => _x( 'South Bačka', 'district', 'woocommerce' ),
-		'JN' => _x( 'South Banat', 'district', 'woocommerce' ),
-		'SM' => _x( 'Srem', 'district', 'woocommerce' ),
-		'SU' => _x( 'Šumadija', 'district', 'woocommerce' ),
-		'TO' => _x( 'Toplica', 'district', 'woocommerce' ),
-		'ZC' => _x( 'West Bačka', 'district', 'woocommerce' ),
-		'ZJ' => _x( 'Zaječar', 'district', 'woocommerce' ),
-		'ZL' => _x( 'Zlatibor', 'district', 'woocommerce' ),
+	'RS' => array( // Serbia districts. Ref: https://github.com/unicode-org/cldr/blob/release-37/common/subdivisions/en.xml#L4251-L4283
+		'RS00' => _x( 'Belgrade', 'district', 'woocommerce' ),
+		'RS14' => _x( 'Bor', 'district', 'woocommerce' ),
+		'RS11' => _x( 'Braničevo', 'district', 'woocommerce' ),
+		'RS02' => _x( 'Central Banat', 'district', 'woocommerce' ),
+		'RS10' => _x( 'Danube', 'district', 'woocommerce' ),
+		'RS23' => _x( 'Jablanica', 'district', 'woocommerce' ),
+		'RS09' => _x( 'Kolubara', 'district', 'woocommerce' ),
+		'RS08' => _x( 'Mačva', 'district', 'woocommerce' ),
+		'RS17' => _x( 'Morava', 'district', 'woocommerce' ),
+		'RS20' => _x( 'Nišava', 'district', 'woocommerce' ),
+		'RS01' => _x( 'North Bačka', 'district', 'woocommerce' ),
+		'RS03' => _x( 'North Banat', 'district', 'woocommerce' ),
+		'RS24' => _x( 'Pčinja', 'district', 'woocommerce' ),
+		'RS22' => _x( 'Pirot', 'district', 'woocommerce' ),
+		'RS13' => _x( 'Pomoravlje', 'district', 'woocommerce' ),
+		'RS19' => _x( 'Rasina', 'district', 'woocommerce' ),
+		'RS18' => _x( 'Raška', 'district', 'woocommerce' ),
+		'RS06' => _x( 'South Bačka', 'district', 'woocommerce' ),
+		'RS04' => _x( 'South Banat', 'district', 'woocommerce' ),
+		'RS07' => _x( 'Srem', 'district', 'woocommerce' ),
+		'RS12' => _x( 'Šumadija', 'district', 'woocommerce' ),
+		'RS21' => _x( 'Toplica', 'district', 'woocommerce' ),
+		'RS05' => _x( 'West Bačka', 'district', 'woocommerce' ),
+		'RS15' => _x( 'Zaječar', 'district', 'woocommerce' ),
+		'RS16' => _x( 'Zlatibor', 'district', 'woocommerce' ),
+		'RS25' => _x( 'Kosovo', 'district', 'woocommerce' ),
+		'RS26' => _x( 'Peć', 'district', 'woocommerce' ),
+		'RS27' => _x( 'Prizren', 'district', 'woocommerce' ),
+		'RS28' => _x( 'Kosovska Mitrovica', 'district', 'woocommerce' ),
+		'RS29' => _x( 'Kosovo-Pomoravlje', 'district', 'woocommerce' ),
+		'RSKM' => _x( 'Kosovo-Metohija', 'district', 'woocommerce' ),
+		'RSVO' => _x( 'Vojvodina', 'district', 'woocommerce' ),
 	),
 	'SE' => array(),
 	'UG' => array( // Uganda districts. Ref: https://en.wikipedia.org/wiki/ISO_3166-2:UG.