diff --git a/scripts/h5peditor.js b/scripts/h5peditor.js
index 27b13535..98a88cf2 100644
--- a/scripts/h5peditor.js
+++ b/scripts/h5peditor.js
@@ -1755,6 +1755,7 @@ ns.supportedLanguages = {
   'hi': 'Hindi (हिन्दी)',
   'ho': 'Hiri Motu',
   'hr': 'Croatian (Hrvatski)',
+  'hsb': 'Upper Sorbian (hornjoserbšćina)',
   'ht': 'Haitian Creole',
   'hu': 'Hungarian (Magyar)',
   'hy': 'Armenian (Հայերեն)',