diff --git a/types/react-sidebar/index.d.ts b/types/react-sidebar/index.d.ts
index 24684c4c76..da6d9e0f79 100644
--- a/types/react-sidebar/index.d.ts
+++ b/types/react-sidebar/index.d.ts
@@ -1,4 +1,4 @@
-// Type definitions for react-sidebar 2.2
+// Type definitions for react-sidebar 2.3
 // Project: https://github.com/balloob/react-sidebar#readme
 // Definitions by: Jeroen Vervaeke <https://github.com/jeroenvervaeke>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
@@ -8,15 +8,16 @@ import { Component } from "react";
 
 export interface SidebarProps {
     contentClassName?: string;
+    defaultSidebarWidth?: number;
     docked?: boolean;
     dragToggleDistance?: number;
-    onSetOpen?(): void;
+    onSetOpen?(open: boolean): void;
     open?: boolean;
     overlayClassName?: string;
     pullRight?: boolean;
     rootClassName?: string;
     shadow?: boolean;
-    sidebar?: any;
+    sidebar?: React.ReactNode;
     sidebarClassName?: string;
     styles?: SidebarStyles;
     transitions?: boolean;
diff --git a/types/react-sidebar/react-sidebar-tests.tsx b/types/react-sidebar/react-sidebar-tests.tsx
index 491bd3fb4f..caeaa3c37d 100644
--- a/types/react-sidebar/react-sidebar-tests.tsx
+++ b/types/react-sidebar/react-sidebar-tests.tsx
@@ -9,11 +9,12 @@ const sidebarStyle: SidebarStyles = {
 
 const sidebar1 = (
     <Sidebar
+        defaultSidebarWidth={30}
         docked={true}
         open={true}
         sidebar={sidebar}
         styles={sidebarStyle}
-        onSetOpen={() => {}}
+        onSetOpen={(open: boolean) => { }}
     >
         <h1>Content</h1>
     </Sidebar>