--- a/devtools/client/webide/modules/app-projects.js
+++ b/devtools/client/webide/modules/app-projects.js
@@ -1,15 +1,15 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 const {Cc,Ci,Cu,Cr} = require("chrome");
 const ObservableObject = require("devtools/client/shared/observable-object");
-const promise = require("devtools/shared/deprecated-sync-thenables");
+const promise = require("promise");
 
 const {EventEmitter} = Cu.import("resource://devtools/shared/event-emitter.js", {});
 const {generateUUID} = Cc['@mozilla.org/uuid-generator;1'].getService(Ci.nsIUUIDGenerator);
 const {FileUtils} = Cu.import("resource://gre/modules/FileUtils.jsm", {});
 const {indexedDB} = require("sdk/indexed-db");
 
 /**
  * IndexedDB wrapper that just save project objects