diff --git a/js/Dialogflow_V2.js b/js/Dialogflow_V2.js
index a04f0a6..e23a399 100644
--- a/js/Dialogflow_V2.js
+++ b/js/Dialogflow_V2.js
@@ -147,8 +147,8 @@ export class Dialogflow_V2 {
     }
 
     resetContexts(onResult, onError) {
-        let request = new ResetContextsRequest(this.client.getAccessToken(), this.client.getSessionId(), null);
-        request.perform().then(res => onResult(res)).catch(err => onError(err));
+      let request = new ResetContextsRequest(this.accessToken, this.sessionId, this.projectId, null);
+      request.perform().then(res => onResult(res)).catch(err => onError(err));
     };
 
     /**
diff --git a/js/ResetContextsRequest.js b/js/ResetContextsRequest.js
index facc096..0f58e32 100644
--- a/js/ResetContextsRequest.js
+++ b/js/ResetContextsRequest.js
@@ -3,17 +3,15 @@
  */
 import { ApiAiRequestError } from "./Errors";
 import XhrRequest from './XhrRequest';
-export const DEFAULT_BASE_URL = "https://api.api.ai/v1/";
-
+export const DEFAULT_BASE_URL = "https://dialogflow.googleapis.com/v2/";
 
 class ResetContextsRequest {
-    constructor(accessToken, sessionId, contextName) {
+    constructor(accessToken, sessionId, projectId, contextName) {
 
         if (contextName != null) {
             this.uri = DEFAULT_BASE_URL + "contexts/" + contextName + "?sessionId=" + sessionId;
         } else {
-            this.uri = DEFAULT_BASE_URL + "contexts?sessionId=" + sessionId;
-        }
+          this.uri = DEFAULT_BASE_URL + "projects/" + projectId + "/agent/sessions/" + sessionId + "/contexts";        }
 
         this.headers = {
             Authorization: "Bearer " + accessToken,