diff --git a/packages/toolkit/__tests__/exit.test.ts b/packages/toolkit/__tests__/exit.test.ts
index 6318f62d..d3901977 100644
--- a/packages/toolkit/__tests__/exit.test.ts
+++ b/packages/toolkit/__tests__/exit.test.ts
@@ -1,36 +1,37 @@
+import * as exitPkg from '@actions/exit'
 import {Signale} from 'signale'
-import {Exit, ExitCode} from '../src/exit'
+import {Exit} from '../src/exit'
 
-describe('Exit', () => {
-  const tests: [keyof Exit, keyof Signale, ExitCode][] = [
-    ['success', 'success', ExitCode.Success],
-    ['neutral', 'info', ExitCode.Neutral],
-    ['failure', 'fatal', ExitCode.Failure]
-  ]
+jest.mock('@actions/exit')
 
-  describe.each(tests)('%s', (method, log, code) => {
-    let logger: Signale
-    let exit: Exit
+const tests: [keyof Exit, keyof Signale][] = [
+  ['success', 'success'],
+  ['neutral', 'info'],
+  ['failure', 'fatal']
+]
 
-    beforeEach(() => {
-      // Create a logger to mock
-      logger = new Signale()
-      logger.success = jest.fn()
-      logger.info = jest.fn()
-      logger.fatal = jest.fn()
+describe.each(tests)('%s', (method, log) => {
+  let logger: Signale
+  let exit: Exit
 
-      process.exit = jest.fn<never, [number]>()
-      exit = new Exit(logger)
-    })
+  beforeEach(() => {
+    // Create a logger to mock
+    logger = new Signale()
+    logger.success = jest.fn()
+    logger.info = jest.fn()
+    logger.fatal = jest.fn()
 
-    it('exits with the expected code', () => {
-      exit[method]()
-      expect(process.exit).toHaveBeenCalledWith(code)
-    })
+    process.exit = jest.fn<never, [number]>()
+    exit = new Exit(logger)
+  })
 
-    it('logs the expected message', () => {
-      exit[method]('hello')
-      expect(logger[log]).toHaveBeenCalledWith('hello')
-    })
+  it('exits with the expected method', () => {
+    exit[method]()
+    expect(exitPkg[method]).toHaveBeenCalled()
+  })
+
+  it('logs the expected message', () => {
+    exit[method]('hello')
+    expect(logger[log]).toHaveBeenCalledWith('hello')
   })
 })
diff --git a/packages/toolkit/__tests__/toolkit.test.ts b/packages/toolkit/__tests__/toolkit.test.ts
index 4a7b233f..d8dd3254 100644
--- a/packages/toolkit/__tests__/toolkit.test.ts
+++ b/packages/toolkit/__tests__/toolkit.test.ts
@@ -1,50 +1,50 @@
+import * as exitPkg from '@actions/exit'
 import {Signale} from 'signale'
-import {ExitCode} from '../src/exit'
 import {Toolkit} from '../src/toolkit'
 
-describe('Toolkit', () => {
-  describe('.run', () => {
-    it('runs a sync function', async () => {
-      const cb = jest.fn(() => true)
-      const value = await Toolkit.run(cb)
-      expect(cb).toHaveBeenCalledWith(expect.any(Toolkit))
-      expect(value).toBe(true)
-    })
+jest.mock('@actions/exit')
 
-    it('runs an async function', async () => {
-      const cb = jest.fn(async () => true)
-      const value = await Toolkit.run(cb)
-      expect(cb).toHaveBeenCalledWith(expect.any(Toolkit))
-      expect(value).toBe(true)
-    })
-
-    it('logs and fails when an error occurs', async () => {
-      const err = new Error()
-      const exitFailure = jest.fn()
-
-      await Toolkit.run(async tk => {
-        tk.exit.failure = exitFailure
-        throw err
-      })
-
-      expect(exitFailure).toHaveBeenCalledWith(err)
-    })
+describe('.run', () => {
+  it('runs a sync function', async () => {
+    const cb = jest.fn(() => true)
+    const value = await Toolkit.run(cb)
+    expect(cb).toHaveBeenCalledWith(expect.any(Toolkit))
+    expect(value).toBe(true)
   })
 
-  it('asserts required keys are present', async () => {
-    const missingKey = '__DOES_NOT_EXIST__'
+  it('runs an async function', async () => {
+    const cb = jest.fn(async () => true)
+    const value = await Toolkit.run(cb)
+    expect(cb).toHaveBeenCalledWith(expect.any(Toolkit))
+    expect(value).toBe(true)
+  })
 
-    Reflect.deleteProperty(process.env, missingKey)
+  it('logs and fails when an error occurs', async () => {
+    const err = new Error()
+    const exitFailure = jest.fn()
 
-    const logger = new Signale()
-    logger.fatal = jest.fn()
-    jest.spyOn(process, 'exit').mockImplementation()
+    await Toolkit.run(async tk => {
+      tk.exit.failure = exitFailure
+      throw err
+    })
 
-    new Toolkit({logger, requiredEnv: [missingKey]})
-
-    expect(process.exit).toHaveBeenCalledWith(ExitCode.Failure)
-    expect(logger.fatal)
-      .toHaveBeenCalledWith(`The following environment variables are required for this action to run:
-- __DOES_NOT_EXIST__`)
+    expect(exitFailure).toHaveBeenCalledWith(err)
   })
 })
+
+it('asserts required keys are present', async () => {
+  const missingKey = '__DOES_NOT_EXIST__'
+
+  Reflect.deleteProperty(process.env, missingKey)
+
+  const logger = new Signale()
+  logger.fatal = jest.fn()
+  jest.spyOn(process, 'exit').mockImplementation()
+
+  new Toolkit({logger, requiredEnv: [missingKey]})
+
+  expect(exitPkg.failure).toHaveBeenCalled()
+  expect(logger.fatal)
+    .toHaveBeenCalledWith(`The following environment variables are required for this action to run:
+- __DOES_NOT_EXIST__`)
+})
diff --git a/packages/toolkit/package.json b/packages/toolkit/package.json
index 874b01cd..45d350c5 100644
--- a/packages/toolkit/package.json
+++ b/packages/toolkit/package.json
@@ -31,8 +31,8 @@
     "url": "https://github.com/actions/toolkit/issues"
   },
   "dependencies": {
+    "@actions/exit": "^0.0.0",
     "@octokit/rest": "^16.25.0",
     "signale": "^1.4.0"
-  },
-  "devDependencies": {}
+  }
 }
diff --git a/packages/toolkit/src/exit.ts b/packages/toolkit/src/exit.ts
index 4d1d5169..69000aac 100644
--- a/packages/toolkit/src/exit.ts
+++ b/packages/toolkit/src/exit.ts
@@ -1,17 +1,6 @@
+import * as exit from '@actions/exit'
 import {Signale} from 'signale'
 
-/**
- * The code to exit an action
- */
-export enum ExitCode {
-  Success = 0,
-  Failure = 1,
-  Neutral = 78
-}
-
-// TODO: These exit codes may not behave as expected on the new runtime, due to
-// complexities of async logging and sync exiting.
-
 /**
  * A class that wraps some basic methods of exiting from an action
  */
@@ -23,7 +12,7 @@ export class Exit {
    */
   success(message?: string) {
     if (message) this.logger.success(message)
-    process.exit(ExitCode.Success)
+    exit.success()
   }
 
   /**
@@ -31,7 +20,7 @@ export class Exit {
    */
   neutral(message?: string) {
     if (message) this.logger.info(message)
-    process.exit(ExitCode.Neutral)
+    exit.neutral()
   }
 
   /**
@@ -39,6 +28,6 @@ export class Exit {
    */
   failure(message?: string) {
     if (message) this.logger.fatal(message)
-    process.exit(ExitCode.Failure)
+    exit.failure()
   }
 }