diff --git a/types/react-helmet/index.d.ts b/types/react-helmet/index.d.ts
index aa80c77b3b..0d4a75878b 100644
--- a/types/react-helmet/index.d.ts
+++ b/types/react-helmet/index.d.ts
@@ -1,6 +1,6 @@
 // Type definitions for react-helmet 5.0
 // Project: https://github.com/nfl/react-helmet
-// Definitions by: Evan Bremer <https://github.com/evanbb>, Isman Usoh <https://github.com/isman-usoh>, François Nguyen <https://github.com/lith-light-g>, Kok Sam <https://github.com/sammkj>
+// Definitions by: Evan Bremer <https://github.com/evanbb>, Isman Usoh <https://github.com/isman-usoh>, François Nguyen <https://github.com/lith-light-g>, Kok Sam <https://github.com/sammkj>, Yui T. <https://github.com/yuit>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 2.1
 
@@ -32,8 +32,8 @@ export class Helmet extends React.Component<HelmetProps, any> {
 
 export interface HelmetData {
     base: HelmetDatum;
-    bodyAttributes: HelmetDatum;
-    htmlAttributes: HelmetDatum;
+    bodyAttributes: HelmetHTMLBodyDatum;
+    htmlAttributes: HelmetHTMLElementDatum;
     link: HelmetDatum;
     meta: HelmetDatum;
     noscript: HelmetDatum;
@@ -48,6 +48,16 @@ export interface HelmetDatum {
     toComponent(): React.Component<any, any>;
 }
 
+export interface HelmetHTMLBodyDatum {
+    toString(): string;
+    toComponent(): React.HTMLAttributes<HTMLBodyElement>;
+}
+
+export interface HelmetHTMLElementDatum {
+    toString(): string;
+    toComponent(): React.HTMLAttributes<HTMLElement>;
+}
+
 export const peek: () => HelmetData;
 export const rewind: () => HelmetData;
 export const renderStatic: () => HelmetData;