diff --git a/src/js/select2/core.js b/src/js/select2/core.js
index 8963b15f..b8830fde 100644
--- a/src/js/select2/core.js
+++ b/src/js/select2/core.js
@@ -196,6 +196,8 @@ define([
         attributes: true,
         subtree: false
       });
+    } else if (this.$element[0].addEventListener) {
+      this.$element[0].addEventListener('DOMAttrModified', self._sync, false);
     }
   };