diff --git a/CHANGELOG.md b/CHANGELOG.md
index 932cb9d..e7d65bc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -30,6 +30,7 @@ For major (breaking) changes - version 3 and 2 see end of page.
 
 | Version        | Date           | Comment  |
 | -------------- | -------------- | -------- |
+| 4.9.2          | 2019-06-12     | type definitions bug fix |
 | 4.9.1          | 2019-06-11     | `networkStats()` bug fix windows |
 | 4.9.0          | 2019-06-03     | `graphics()` added vendor, refresh rate, current res |
 | 4.8.4          | 2019-06-03     | `vboxInfo()` fixed call parameters |
diff --git a/docs/history.html b/docs/history.html
index 6fc69f9..7ac9ec7 100644
--- a/docs/history.html
+++ b/docs/history.html
@@ -81,8 +81,13 @@
                 </thead>
                 <tbody>
                   <tr>
-                    <th scope="row">4.9.0</th>
-                    <td>2019-06-03</td>
+                    <th scope="row">4.9.2</th>
+                    <td>2019-06-12</td>
+                    <td><span class="code">type definitions</span> bug fix</td>
+                  </tr>
+                  <tr>
+                    <th scope="row">4.9.1</th>
+                    <td>2019-06-11</td>
                     <td><span class="code">networkStats()</span> bugfix windows</td>
                   </tr>
                   <tr>
diff --git a/docs/index.html b/docs/index.html
index 3d1946d..0779c8e 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -168,7 +168,7 @@
       <img class="logo" src="assets/logo.png">
       <div class="title">systeminformation</div>
       <div class="subtitle"><span id="typed"></span></div>
-      <div class="version">Current Version: <span id="version">4.9.1</span></div>
+      <div class="version">Current Version: <span id="version">4.9.2</span></div>
       <button class="btn btn-light" onclick="location.href='https://github.com/sebhildebrandt/systeminformation'">View on Github <i class=" fab fa-github"></i></button>
     </div>
     <div class="down">
diff --git a/lib/index.d.ts b/lib/index.d.ts
index 067f27d..7805714 100644
--- a/lib/index.d.ts
+++ b/lib/index.d.ts
@@ -616,7 +616,7 @@ export function fsOpenFiles(cb?: (data: Systeminformation.FsOpenFilesData[]) =>
 export function blockDevices(cb?: (data: Systeminformation.BlockDevicesData[]) => any): Promise<Systeminformation.BlockDevicesData[]>;
 export function fsStats(cb?: (data: Systeminformation.FsStatsData) => any): Promise<Systeminformation.FsStatsData>;
 export function disksIO(cb?: (data: Systeminformation.DisksIoData) => any): Promise<Systeminformation.DisksIoData>;
-export function diskLayout(cb?: (data: Systeminformation.DiskLayoutData) => any): Promise<Systeminformation.DiskLayoutData>;
+export function diskLayout(cb?: (data: Systeminformation.DiskLayoutData[]) => any): Promise<Systeminformation.DiskLayoutData[]>;
 
 export function networkInterfaceDefault(cb?: (data: string) => any): Promise<string>;
 export function networkInterfaces(cb?: (data: Systeminformation.NetworkInterfacesData[]) => any): Promise<Systeminformation.NetworkInterfacesData[]>;