diff --git a/js/density-config.js b/js/density-config.js
index c8958e4..66be464 100644
--- a/js/density-config.js
+++ b/js/density-config.js
@@ -42,7 +42,8 @@ require.config( {
     SCENERY_PHET: '../../scenery-phet/js',
     SUN: '../../sun/js',
     TAMBO: '../../tambo/js',
-    TANDEM: '../../tandem/js'
+    TANDEM: '../../tandem/js',
+    UTTERANCE_QUEUE: '../../utterance-queue/js'
   },
 
   // Cache busting is applied by default, but can be disabled via ?cacheBust=false, see initialize-globals.js