diff --git a/buildtask/OwaspZapScan/classes/ActiveScan.ts b/buildtask/OwaspZapScan/classes/ActiveScan.ts
index b727a24..8882a39 100644
--- a/buildtask/OwaspZapScan/classes/ActiveScan.ts
+++ b/buildtask/OwaspZapScan/classes/ActiveScan.ts
@@ -1,7 +1,5 @@
-import * as Request from 'request';
 import * as RequestPromise from 'request-promise';
 import * as Task from 'vsts-task-lib';
-import * as sleep from 'thread-sleep';
 
 import { ZapScanBase } from './ZapScanBase';
 import { ScanResult } from './../interfaces/types/ScanResult';
diff --git a/buildtask/OwaspZapScan/classes/Reports.ts b/buildtask/OwaspZapScan/classes/Reports.ts
index 4dd8f06..f974357 100644
--- a/buildtask/OwaspZapScan/classes/Reports.ts
+++ b/buildtask/OwaspZapScan/classes/Reports.ts
@@ -3,7 +3,6 @@ import * as path from 'path';
 import * as Task from 'vsts-task-lib';
 import * as Request from 'request';
 import * as RequestPromise from 'request-promise';
-import * as sleep from 'thread-sleep';
 import * as XmlParser from 'xmljson';
 
 import { AlertItem } from './../interfaces/types/ZapReport';
diff --git a/buildtask/OwaspZapScan/classes/SpiderScan.ts b/buildtask/OwaspZapScan/classes/SpiderScan.ts
index 7f550b9..7a3b2c8 100644
--- a/buildtask/OwaspZapScan/classes/SpiderScan.ts
+++ b/buildtask/OwaspZapScan/classes/SpiderScan.ts
@@ -1,7 +1,5 @@
-import * as Request from 'request';
 import * as RequestPromise from 'request-promise';
 import * as Task from 'vsts-task-lib';
-import * as sleep from 'thread-sleep';
 
 import { ZapScanBase } from './ZapScanBase';
 import { IZapScan } from './../interfaces/contracts/IZapScan';
diff --git a/buildtask/OwaspZapScan/classes/ZapScanBase.ts b/buildtask/OwaspZapScan/classes/ZapScanBase.ts
index 10b9038..441f510 100644
--- a/buildtask/OwaspZapScan/classes/ZapScanBase.ts
+++ b/buildtask/OwaspZapScan/classes/ZapScanBase.ts
@@ -1,7 +1,7 @@
 import * as Task from 'vsts-task-lib';
 import * as Request from 'request';
 import * as RequestPromise from 'request-promise';
-import * as sleep from 'thread-sleep';
+import sleep =  require('thread-sleep');
 
 import { IZapScan } from './../interfaces/contracts/IZapScan';
 import { ScanResult } from "../interfaces/types/ScanResult";