diff --git a/build/change-version.js b/build/change-version.js
index 971f447fb6c9bd1d844732862bbcfa6ee1d73006..8b349a68ad5d8a593121d4e364e861fde9cc97cc 100755
--- a/build/change-version.js
+++ b/build/change-version.js
@@ -90,6 +90,7 @@ function main(args) {
   const newVersion = args[1]
   const EXCLUDED_DIRS = new Set([
     '.git',
+    '_gh_pages',
     'node_modules',
     'vendor'
   ])