diff --git a/package.json b/package.json
index 8bb1d66..709868f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "botlib",
-  "version": "0.0.28",
+  "version": "0.0.29",
     "description": "General Bot base library for building Node.js TypeScript Apps packages (.gbapp)",
   "main": "dist/src/index.js",
   "types": "dist/src/index.d.ts",
@@ -16,7 +16,12 @@
   },
   "dependencies": {
     "async": "^2.6.1",
-    "botbuilder": "^3.15.0",
+    "botbuilder": "^4.0.0-preview1.2",
+    "botbuilder-ai": "^4.0.0-preview1.2",
+    "botbuilder-azure": "^4.0.0-preview1.2",
+    "botbuilder-choices": "^4.0.0-preview1.2",
+    "botbuilder-dialogs": "^4.0.0-preview1.2",
+    "botbuilder-prompts": "^4.0.0-preview1.2",
     "botbuilder-location": "^2.0.0",
     "chrono-node": "^1.3.5",
     "dotenv-extended": "^2.0.2",
diff --git a/src/GBMinInstance.ts b/src/GBMinInstance.ts
index a3d7699..e4580a9 100644
--- a/src/GBMinInstance.ts
+++ b/src/GBMinInstance.ts
@@ -31,7 +31,8 @@
 \*****************************************************************************/
 
 
-import { UniversalBot } from "botbuilder";
+import { BotAdapter, UserState } from "botbuilder";
+import { DialogSet } from "botbuilder-dialogs"
 import { IGBInstance } from "./IGBinstance";
 import { IGBCoreService } from "./IGBCoreService";
 import { IGBConversationalService, IGBPackage } from ".";
@@ -46,9 +47,12 @@ export class GBMinInstance {
   core: IGBCoreService;
   conversationalService: IGBConversationalService;
   textServices: AzureText;
-  bot: UniversalBot;
-
+  bot: BotAdapter;
+  dialogs: DialogSet;
+  userState: UserState;
+  
   constructor() {
     this.packages = [];
+    this.dialogs = new DialogSet();
   }
 }
\ No newline at end of file
diff --git a/src/IGBConversationalService.ts b/src/IGBConversationalService.ts
index 9af7f31..b5e79c5 100644
--- a/src/IGBConversationalService.ts
+++ b/src/IGBConversationalService.ts
@@ -32,14 +32,14 @@
 
 "use strict";
 
-import { UniversalBot, Session } from "botbuilder";
 import { GBMinInstance } from "./GBMinInstance";
 import { GBServiceCallback } from "./GBService";
+import { DialogContext } from "botbuilder-dialogs";
 
 export interface IGBConversationalService {
-    sendEvent(session: Session, name: string, value: any);
+    sendEvent(dc:any, name: string, value: any);
     runNLP(
-        session: Session,
+        dc:any,
         min: GBMinInstance,
         text: string,
         cb: GBServiceCallback<any>
diff --git a/src/IGBCoreService.ts b/src/IGBCoreService.ts
index b220e37..ad87abb 100644
--- a/src/IGBCoreService.ts
+++ b/src/IGBCoreService.ts
@@ -32,7 +32,6 @@
 
 "use strict";
 
-import { UniversalBot, Session } from "botbuilder";
 import { GBMinInstance } from "./GBMinInstance";
 import { GBServiceCallback } from "./GBService";
 import { Sequelize } from "sequelize-typescript";
diff --git a/src/IGBDialog.ts b/src/IGBDialog.ts
index 33e792e..7dc176c 100644
--- a/src/IGBDialog.ts
+++ b/src/IGBDialog.ts
@@ -1,3 +1,4 @@
+import { BotAdapter } from 'botbuilder';
 /*****************************************************************************\
 |                                               ( )_  _                       |
 |    _ _    _ __   _ _    __    ___ ___     _ _ | ,_)(_)  ___   ___     _     |
@@ -32,21 +33,12 @@
 
 "use strict";
 
-import {
-  IChatConnectorSettings,
-  IDialogResult,
-  IFindMatchResult,
-  Session,
-  Prompts,
-  ChatConnector,
-  UniversalBot
-} from "botbuilder";
 import { GBService } from "./GBService";
 
 export class IGBDialog {
-  bot: UniversalBot;
+  bot: BotAdapter;
   service: GBService;
-  constructor(bot: UniversalBot) {
+  constructor(bot: BotAdapter) {
 
   }
 }
diff --git a/src/IGBInstance.ts b/src/IGBInstance.ts
index e496dd0..65b0673 100644
--- a/src/IGBInstance.ts
+++ b/src/IGBInstance.ts
@@ -53,6 +53,8 @@ export interface IGBInstance {
     theme: string;
     ui: string;
     kb: string;
+    nlpAppId: string;
+    nlpSubscriptionKey: string;
     nlpServerUrl: string;
     speechKey: string;
     spellcheckerKey: string;
diff --git a/src/IGBPackage.ts b/src/IGBPackage.ts
index e56703f..e5c0806 100644
--- a/src/IGBPackage.ts
+++ b/src/IGBPackage.ts
@@ -34,7 +34,6 @@
 import { IGBCoreService } from './IGBCoreService';
 import { Sequelize, Model } from 'sequelize-typescript';
 import { GBMinInstance } from '.';
-import { Session } from 'botbuilder';
 
 "use strict";
 
@@ -55,7 +54,7 @@ export interface IGBPackage{
     /** Called whenever a bot instance needs to be shutdown. */
     unloadBot(min: GBMinInstance): void;
 
-    /** Called in each new session. */
-    onNewSession(min: GBMinInstance, session: Session): void;
+    /** Called in each new dc. */
+    onNewSession(min: GBMinInstance, dc: any): void;
 
 }
\ No newline at end of file