diff --git a/grunt/change-version.js b/grunt/change-version.js
index 5e1681d3f95a..08b74f2e29b1 100755
--- a/grunt/change-version.js
+++ b/grunt/change-version.js
@@ -95,6 +95,7 @@ function main(args) {
     '.html',
     '.js',
     '.json',
+    '.less',
     '.md',
     '.scss',
     '.txt',