diff --git a/src/AnonymousUtils.js b/src/AnonymousUtils.js
index 872f61241..f9de0f0ff 100644
--- a/src/AnonymousUtils.js
+++ b/src/AnonymousUtils.js
@@ -11,7 +11,7 @@
 
 import ParseUser from './ParseUser';
 import type { RequestOptions } from './RESTController';
-const uuidv4 = require('uuid/v4');
+const uuidv4 = require('./uuid');
 
 let registered = false;
 
diff --git a/src/InstallationController.js b/src/InstallationController.js
index c99697e4b..08008c12a 100644
--- a/src/InstallationController.js
+++ b/src/InstallationController.js
@@ -10,7 +10,7 @@
  */
 
 import Storage from './Storage';
-const uuidv4 = require('uuid/v4');
+const uuidv4 = require('./uuid');
 
 let iidCache = null;
 
diff --git a/src/ParseObject.js b/src/ParseObject.js
index 6cb214337..8f4198cfd 100644
--- a/src/ParseObject.js
+++ b/src/ParseObject.js
@@ -43,7 +43,7 @@ import unsavedChildren from './unsavedChildren';
 import type { AttributeMap, OpsMap } from './ObjectStateMutations';
 import type { RequestOptions, FullOptions } from './RESTController';
 
-const uuidv4 = require('uuid/v4');
+const uuidv4 = require('./uuid');
 
 export type Pointer = {
   __type: string,
diff --git a/src/RESTController.js b/src/RESTController.js
index 85e18fc9d..4e0653239 100644
--- a/src/RESTController.js
+++ b/src/RESTController.js
@@ -9,7 +9,7 @@
  * @flow
  */
 /* global XMLHttpRequest, XDomainRequest */
-const uuidv4 = require('uuid/v4');
+const uuidv4 = require('./uuid');
 
 import CoreManager from './CoreManager';
 import ParseError from './ParseError';
diff --git a/src/__tests__/InstallationController-test.js b/src/__tests__/InstallationController-test.js
index 7d22f2466..9c3ff8cf3 100644
--- a/src/__tests__/InstallationController-test.js
+++ b/src/__tests__/InstallationController-test.js
@@ -11,7 +11,7 @@ jest.dontMock('../CoreManager');
 jest.dontMock('../InstallationController');
 jest.dontMock('../Storage');
 jest.dontMock('../StorageController.default');
-jest.mock('uuid/v4', () => {
+jest.mock('../uuid', () => {
   let value = 0;
   return () => value++ + '';
 });
diff --git a/src/__tests__/ParseObject-test.js b/src/__tests__/ParseObject-test.js
index 9e222e4b9..e8294aef0 100644
--- a/src/__tests__/ParseObject-test.js
+++ b/src/__tests__/ParseObject-test.js
@@ -33,7 +33,7 @@ jest.dontMock('../unsavedChildren');
 jest.dontMock('../ParseACL');
 jest.dontMock('../LocalDatastore');
 
-jest.mock('uuid/v4', () => {
+jest.mock('../uuid', () => {
   let value = 0;
   return () => value++;
 });
diff --git a/src/__tests__/ParseQuery-test.js b/src/__tests__/ParseQuery-test.js
index 26c555be3..89150dc03 100644
--- a/src/__tests__/ParseQuery-test.js
+++ b/src/__tests__/ParseQuery-test.js
@@ -21,7 +21,7 @@ jest.dontMock('../LocalDatastore');
 jest.dontMock('../OfflineQuery');
 jest.dontMock('../LiveQuerySubscription');
 
-jest.mock('uuid/v4', () => {
+jest.mock('../uuid', () => {
   let value = 0;
   return () => value++;
 });
diff --git a/src/__tests__/ParseUser-test.js b/src/__tests__/ParseUser-test.js
index 6c0fa5905..8691513a3 100644
--- a/src/__tests__/ParseUser-test.js
+++ b/src/__tests__/ParseUser-test.js
@@ -31,7 +31,7 @@ jest.dontMock('../UniqueInstanceStateController');
 jest.dontMock('crypto-js/aes');
 jest.dontMock('crypto-js/enc-utf8');
 
-jest.mock('uuid/v4', () => {
+jest.mock('../uuid', () => {
   let value = 0;
   return () => value++;
 });
diff --git a/src/__tests__/RESTController-test.js b/src/__tests__/RESTController-test.js
index 950605f14..f2074c47a 100644
--- a/src/__tests__/RESTController-test.js
+++ b/src/__tests__/RESTController-test.js
@@ -9,7 +9,7 @@
 
 jest.autoMockOff();
 jest.useFakeTimers();
-jest.mock('uuid/v4', () => {
+jest.mock('../uuid', () => {
   let value = 1000;
   return () => (value++).toString();
 });
diff --git a/src/uuid.js b/src/uuid.js
new file mode 100644
index 000000000..c8bfdc434
--- /dev/null
+++ b/src/uuid.js
@@ -0,0 +1,22 @@
+let uuid = null;
+
+if (process.env.PARSE_BUILD === 'weapp') {
+  uuid = function () {
+    const s = [];
+    const hexDigits = '0123456789abcdef';
+
+    for (let i = 0; i < 36; i++) {
+      s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1);
+    }
+
+    s[14] = '4'; // bits 12-15 of the time_hi_and_version field to 0010
+    s[19] = hexDigits.substr((s[19] & 0x3) | 0x8, 1); // bits 6-7 of the clock_seq_hi_and_reserved to 01
+    s[8] = s[13] = s[18] = s[23] = '-';
+
+    return s.join('');
+  };
+} else {
+  uuid = require('uuid/v4');
+}
+
+module.exports = uuid;