diff --git a/less/bootstrap.less b/less/bootstrap.less
index 61b77474f9..3cd9828d39 100644
--- a/less/bootstrap.less
+++ b/less/bootstrap.less
@@ -1,3 +1,9 @@
+/*!
+ * Bootstrap v3.3.4 (http://getbootstrap.com)
+ * Copyright 2011-2015 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ */
+
 // Core variables and mixins
 @import "variables.less";
 @import "mixins.less";