diff --git a/package.json b/package.json
index e1b2b9c59..ed40d7c23 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,6 @@
     "babel-jest": "^25.2.3",
     "babel-preset-jest": "^25.2.1",
     "dom-event-types": "^1.0.0",
-    "flush-promises": "^1.0.2",
     "husky": "^4.2.3",
     "jest": "^25.1.0",
     "jsdom": "^16.2.2",
diff --git a/src/index.ts b/src/index.ts
index d28e345f2..5f19a9ce3 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -3,5 +3,14 @@ import { RouterLinkStub } from './components/RouterLinkStub'
 import { VueWrapper } from './vueWrapper'
 import { DOMWrapper } from './domWrapper'
 import { config } from './config'
+import { flushPromises } from './utils/flushPromises'
 
-export { mount, shallowMount, RouterLinkStub, VueWrapper, DOMWrapper, config }
+export {
+  mount,
+  shallowMount,
+  RouterLinkStub,
+  VueWrapper,
+  DOMWrapper,
+  config,
+  flushPromises
+}
diff --git a/src/utils/flushPromises.ts b/src/utils/flushPromises.ts
new file mode 100644
index 000000000..05315fa52
--- /dev/null
+++ b/src/utils/flushPromises.ts
@@ -0,0 +1,7 @@
+const scheduler = typeof setImmediate === 'function' ? setImmediate : setTimeout
+
+export function flushPromises() {
+  return new Promise((resolve) => {
+    scheduler(resolve, 0)
+  })
+}
diff --git a/src/utils/vueShared.ts b/src/utils/vueShared.ts
index 25d7ac8cf..2214494b5 100644
--- a/src/utils/vueShared.ts
+++ b/src/utils/vueShared.ts
@@ -19,17 +19,3 @@ const hyphenateRE = /\B([A-Z])/g
 export const hyphenate = cacheStringFunction((str: string): string => {
   return str.replace(hyphenateRE, '-$1').toLowerCase()
 })
-
-export const enum ShapeFlags {
-  ELEMENT = 1,
-  FUNCTIONAL_COMPONENT = 1 << 1,
-  STATEFUL_COMPONENT = 1 << 2,
-  TEXT_CHILDREN = 1 << 3,
-  ARRAY_CHILDREN = 1 << 4,
-  SLOTS_CHILDREN = 1 << 5,
-  TELEPORT = 1 << 6,
-  SUSPENSE = 1 << 7,
-  COMPONENT_SHOULD_KEEP_ALIVE = 1 << 8,
-  COMPONENT_KEPT_ALIVE = 1 << 9,
-  COMPONENT = ShapeFlags.STATEFUL_COMPONENT | ShapeFlags.FUNCTIONAL_COMPONENT
-}
diff --git a/src/vueWrapper.ts b/src/vueWrapper.ts
index c073d6ff6..bf0f8fcc9 100644
--- a/src/vueWrapper.ts
+++ b/src/vueWrapper.ts
@@ -1,5 +1,5 @@
 import { ComponentPublicInstance, nextTick, App } from 'vue'
-import { ShapeFlags } from './utils/vueShared'
+import { ShapeFlags } from '@vue/shared'
 import { config } from './config'
 
 import { DOMWrapper } from './domWrapper'
diff --git a/tests/features/async-components.spec.ts b/tests/features/async-components.spec.ts
index e829668a5..bc26ed57c 100644
--- a/tests/features/async-components.spec.ts
+++ b/tests/features/async-components.spec.ts
@@ -1,7 +1,6 @@
 import { defineAsyncComponent, defineComponent, h, AppConfig } from 'vue'
-import flushPromises from 'flush-promises'
 
-import { mount } from '../../src'
+import { mount, flushPromises } from '../../src'
 
 const config: AppConfig = {
   devtools: false,
diff --git a/tests/features/suspense.spec.ts b/tests/features/suspense.spec.ts
index d4f6f354e..1338fbce4 100644
--- a/tests/features/suspense.spec.ts
+++ b/tests/features/suspense.spec.ts
@@ -1,7 +1,5 @@
-import flushPromises from 'flush-promises'
-
 import SuspenseComponent from '../components/Suspense.vue'
-import { mount } from '../../src'
+import { mount, flushPromises } from '../../src'
 
 let mockShouldError = false
 jest.mock('../utils', () => ({
diff --git a/yarn.lock b/yarn.lock
index 3d5e24308..245846c8d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2572,11 +2572,6 @@ find-versions@^3.2.0:
   dependencies:
     semver-regex "^2.0.0"
 
-flush-promises@^1.0.2:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/flush-promises/-/flush-promises-1.0.2.tgz#4948fd58f15281fed79cbafc86293d5bb09b2ced"
-  integrity sha512-G0sYfLQERwKz4+4iOZYQEZVpOt9zQrlItIxQAAYAWpfby3gbHrx0osCHz5RLl/XoXevXk0xoN4hDFky/VV9TrA==
-
 for-in@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/for-in/-/for-in-1.0.2.tgz#81068d295a8142ec0ac726c6e2200c30fb6d5e80"