diff --git a/src/settings.js b/src/settings.js
index a14e5cb..6649090 100644
--- a/src/settings.js
+++ b/src/settings.js
@@ -2,6 +2,7 @@ import merge from 'lodash/merge';
 
 const settings = {
     tableClass: '',
+    theadClass: '',
     headerClass: '',
     cellClass: '',
     filterInputClass: '',