diff --git a/Resources.php b/Resources.php
index 433d778c..d0a2b79b 100644
--- a/Resources.php
+++ b/Resources.php
@@ -71,7 +71,6 @@ $wgResourceModules['ext.uls.init'] = array(
 	'dependencies' => array(
 		'mediawiki.Uri',
 		'jquery.client',
-		'jquery.json',
 		'jquery.cookie',
 	),
 	'position' => 'top',
diff --git a/resources/js/ext.uls.init.js b/resources/js/ext.uls.init.js
index 335098c4..eca413e7 100644
--- a/resources/js/ext.uls.init.js
+++ b/resources/js/ext.uls.init.js
@@ -104,7 +104,7 @@
 
 	mw.uls.setPreviousLanguages = function ( previousLanguages ) {
 		$.cookie( mw.uls.previousLanguagesCookie,
-			$.toJSON( previousLanguages ), {
+			JSON.stringify( previousLanguages ), {
 				path: '/'
 			}
 		);
@@ -118,7 +118,7 @@
 		}
 
 		// return last 5 language changes
-		return $.parseJSON( previousLanguages ).slice( -5 );
+		return JSON.parse( previousLanguages ).slice( -5 );
 	};
 
 	/**