diff --git a/types/react-custom-scrollbars/index.d.ts b/types/react-custom-scrollbars/index.d.ts
index cf9410f81d..88ed144561 100644
--- a/types/react-custom-scrollbars/index.d.ts
+++ b/types/react-custom-scrollbars/index.d.ts
@@ -1,6 +1,7 @@
-// Type definitions for react-css-transition-replace 2.0.1
+// Type definitions for react-custom-scrollbars 4.0
 // Project: https://github.com/malte-wessel/react-custom-scrollbars
-// Definitions by: David-LeBlanc-git <https://github.com/David-LeBlanc-git>
+// Definitions by:  David-LeBlanc-git <https://github.com/David-LeBlanc-git>
+//                  kittimiyo <https://github.com/kittimiyo>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 2.1
 
@@ -31,6 +32,8 @@ declare module "react-custom-scrollbars" {
         renderThumbHorizontal?: React.StatelessComponent<any>;
         renderThumbVertical?: React.StatelessComponent<any>;
 
+        hideTracksWhenNotNeeded?: boolean;
+
         autoHide?: boolean;
         autoHideTimeout?: number;
         autoHideDuration?: number;
@@ -38,6 +41,10 @@ declare module "react-custom-scrollbars" {
         thumbSize?: number;
         thumbMinSize?: number;
         universal?: boolean;
+
+        autoHeight?: boolean;
+        autoHeightMin?: number;
+        autoHeightMax?: number;
     }
 
     export default class Scrollbars extends React.Component<ScrollbarProps, {}> {
@@ -51,8 +58,8 @@ declare module "react-custom-scrollbars" {
         getScrollTop(): number;
         getScrollWidth(): number;
         getScrollHeight(): number;
-        getWidth(): number;
-        getHeight(): number;
+        getClientWidth(): number;
+        getClientHeight(): number;
         getValues(): positionValues;
     }
-}
\ No newline at end of file
+}
diff --git a/types/react-custom-scrollbars/v3/index.d.ts b/types/react-custom-scrollbars/v3/index.d.ts
new file mode 100644
index 0000000000..a5ae0da8b2
--- /dev/null
+++ b/types/react-custom-scrollbars/v3/index.d.ts
@@ -0,0 +1,58 @@
+// Type definitions for react-custom-scrollbars 3.0
+// Project: https://github.com/malte-wessel/react-custom-scrollbars
+// Definitions by: David-LeBlanc-git <https://github.com/David-LeBlanc-git>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.1
+
+import * as React from "react";
+
+declare module "react-custom-scrollbars" {
+    export interface positionValues {
+        top: number;
+        left: number;
+        clientWidth: number;
+        clientHeight: number;
+        scrollWidth: number;
+        scrollHeight: number;
+        scrollLeft: number;
+        scrollTop: number;
+    }
+
+    export interface ScrollbarProps extends React.HTMLProps<Scrollbars> {
+        onScroll?: React.UIEventHandler<any>;
+        onScrollFrame?: (values: positionValues) => void;
+        onScrollStart?: () => void;
+        onScrollStop?: () => void;
+        onUpdate?: (values: positionValues) => void;
+
+        renderView?: React.StatelessComponent<any>;
+        renderTrackHorizontal?: React.StatelessComponent<any>;
+        renderTrackVertical?: React.StatelessComponent<any>;
+        renderThumbHorizontal?: React.StatelessComponent<any>;
+        renderThumbVertical?: React.StatelessComponent<any>;
+
+        autoHide?: boolean;
+        autoHideTimeout?: number;
+        autoHideDuration?: number;
+
+        thumbSize?: number;
+        thumbMinSize?: number;
+        universal?: boolean;
+    }
+
+    export default class Scrollbars extends React.Component<ScrollbarProps, {}> {
+        scrollTop(top: number): void;
+        scrollLeft(left: number): void;
+        scrollToTop(): void;
+        scrollToBottom(): void;
+        scrollToLeft(): void;
+        scrollToRight(): void;
+        getScrollLeft(): number;
+        getScrollTop(): number;
+        getScrollWidth(): number;
+        getScrollHeight(): number;
+        getWidth(): number;
+        getHeight(): number;
+        getValues(): positionValues;
+    }
+}
diff --git a/types/react-custom-scrollbars/v3/react-custom-scrollbars-tests.tsx b/types/react-custom-scrollbars/v3/react-custom-scrollbars-tests.tsx
new file mode 100644
index 0000000000..240061eada
--- /dev/null
+++ b/types/react-custom-scrollbars/v3/react-custom-scrollbars-tests.tsx
@@ -0,0 +1,10 @@
+import * as React from "react"
+import { render } from 'react-dom';
+import Scrollbars from "react-custom-scrollbars"
+
+render(
+    <Scrollbars>
+        <div>Test</div>
+    </Scrollbars>,
+    document.getElementById("main")
+)
diff --git a/types/react-custom-scrollbars/v3/tsconfig.json b/types/react-custom-scrollbars/v3/tsconfig.json
new file mode 100644
index 0000000000..81204a9799
--- /dev/null
+++ b/types/react-custom-scrollbars/v3/tsconfig.json
@@ -0,0 +1,28 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6",
+            "dom"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "baseUrl": "../../",
+        "typeRoots": [
+            "../../"
+        ],
+        "paths": {
+          "react-custom-scrollbars": ["react-custom-scrollbars/v3"],
+          "react-custom-scrollbars/*": ["react-custom-scrollbars/v3/*"]
+        },
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true,
+        "jsx": "react"
+    },
+    "files": [
+        "index.d.ts",
+        "react-custom-scrollbars-tests.tsx"
+    ]
+}