diff --git a/adm-zip/adm-zip-tests.ts b/adm-zip/adm-zip-tests.ts
index 93f8f2f2d..8637751bf 100644
--- a/adm-zip/adm-zip-tests.ts
+++ b/adm-zip/adm-zip-tests.ts
@@ -17,7 +17,8 @@ console.log(zip.readAsText("some_folder/my_file.txt"));
 zip.extractEntryTo(/*entry name*/"some_folder/my_file.txt", /*target path*/"/home/me/tempfolder", /*overwrite*/true)
 // extracts everything
 zip.extractAllTo(/*target path*/"/home/me/zipcontent/", /*overwrite*/true);
-
+// extracts everything and calls callback -> async extracction
+zip.extractAllToAsync(/*target path*/"/home/me/zipcontent/", /*overwrite*/true, (error: Error)=> {});
 
 // creating archives
 var zip = new AdmZip();
@@ -58,4 +59,4 @@ zip.extractEntryTo("folder/subfolder/myfile.txt", "/home/user/", false, true);
 
 function isAdmZipEntry(obj: any): obj is AdmZip.IZipEntry {
   return obj !== null && typeof obj === "object" && typeof obj['entryName'] === 'string';
-}
\ No newline at end of file
+}
diff --git a/adm-zip/adm-zip.d.ts b/adm-zip/adm-zip.d.ts
index 208c13b27..a42978ca8 100644
--- a/adm-zip/adm-zip.d.ts
+++ b/adm-zip/adm-zip.d.ts
@@ -1,6 +1,6 @@
 // Type definitions for adm-zip v0.4.4
 // Project: https://github.com/cthackers/adm-zip
-// Definitions by: John Vilk <https://github.com/jvilk>
+// Definitions by: John Vilk <https://github.com/jvilk>, Abner Oliveira <https://github.com/abner>
 // Definitions: https://github.com/borisyankov/DefinitelyTyped
 
 /// <reference path="../node/node.d.ts" />
@@ -211,6 +211,14 @@ declare module "adm-zip" {
          *   will be overwriten if this is true. Default is FALSE
          */
         extractAllTo(targetPath: string, overwrite?: boolean): void;
+        /**
+         * Extracts the entire archive to the given location
+         * @param targetPath Target location
+         * @param overwrite If the file already exists at the target path, the file
+         *   will be overwriten if this is true. Default is FALSE
+         * @param callback The callback function will be called afeter extraction 
+         */
+        extractAllToAsync(targetPath: string, overwrite: boolean, callback: (error: Error) => void): void;
         /**
          * Writes the newly created zip file to disk at the specified location or
          * if a zip was opened and no ``targetFileName`` is provided, it will