diff --git a/john-travoltage_en.html b/john-travoltage_en.html
index dbee3003..9212ce12 100644
--- a/john-travoltage_en.html
+++ b/john-travoltage_en.html
@@ -37,6 +37,7 @@
       '../sherpa/lib/lodash-4.17.4.js',
       '../sherpa/lib/FileSaver-b8054a2.js',
       '../sherpa/lib/himalaya-0.2.7.js',
+      '../sherpa/lib/he-1.1.1.js',
       '../assert/js/assert.js',
       '../query-string-machine/js/QueryStringMachine.js',
       '../chipper/js/initialize-globals.js',