diff --git a/react-helmet/react-helmet.d.ts b/react-helmet/react-helmet.d.ts
index b5b69411ee..2ea19ae469 100644
--- a/react-helmet/react-helmet.d.ts
+++ b/react-helmet/react-helmet.d.ts
@@ -9,21 +9,23 @@ declare namespace ReactHelmet {
     import React = __React;
     
     interface HelmetProps {
-        title?: string;
-        titleTemplate?: string;
         base?: any;
+        htmlAttributes?: any;
         link?: Array<any>;
         meta?: Array<any>;
         script?: Array<any>;
+        title?: string;
+        titleTemplate?: string;
         onChangeClientState?: (newState: any) => void;
     }
 
     interface HelmetData {
-        title: HelmetDatum;
         base: HelmetDatum;
+        htmlAttributes: HelmetDatum;
         link: HelmetDatum;
         meta: HelmetDatum;
         script: HelmetDatum;
+        title: HelmetDatum;
     }
     
     interface HelmetDatum {