diff --git a/packages/core/package.json b/packages/core/package.json
index 3f39447a..df9eb6b7 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -33,5 +33,8 @@
   },
   "devDependencies": {
     "@types/node": "^12.0.2"
+  },
+  "dependencies": {
+    "@actions/exit": "^0.0.0"
   }
 }
diff --git a/packages/core/src/core.ts b/packages/core/src/core.ts
index f0e1e105..d34d8077 100644
--- a/packages/core/src/core.ts
+++ b/packages/core/src/core.ts
@@ -1,6 +1,14 @@
-import * as im from './interfaces'
+import {ExitCode} from '@actions/exit'
 import * as intm from './internal'
 
+/**
+ * Interface for getInput options
+ */
+export interface InputOptions {
+  /** Optional. Whether the input is required. If required and not present, will throw. Defaults to false */
+  required?: boolean
+}
+
 //-----------------------------------------------------------------------
 // Variables
 //-----------------------------------------------------------------------
@@ -50,7 +58,7 @@ export function getInput(name: string, options?: im.InputOptions): string {
  * Sets the action status to neutral
  */
 export function setNeutral() {
-  process.exitCode = im.ExitCode.Neutral
+  process.exitCode = ExitCode.Neutral
 }
 
 /**
@@ -59,7 +67,7 @@ export function setNeutral() {
  * @param message add error issue message
  */
 export function setFailed(message: string) {
-  process.exitCode = im.ExitCode.Failure
+  process.exitCode = ExitCode.Failure
   error(message)
 }
 
diff --git a/packages/core/src/interfaces.ts b/packages/core/src/interfaces.ts
deleted file mode 100644
index 247f8e99..00000000
--- a/packages/core/src/interfaces.ts
+++ /dev/null
@@ -1,27 +0,0 @@
-/**
- * The code to exit an action
- */
-export enum ExitCode {
-  /**
-   * A code indicating that the action was successful
-   */
-  Success = 0,
-
-  /**
-   * A code indicating that the action was a failure
-   */
-  Failure = 1,
-
-  /**
-   * A code indicating that the action is complete, but neither succeeded nor failed
-   */
-  Neutral = 78
-}
-
-/**
- * Interface for getInput options
- */
-export interface InputOptions {
-  /** Optional. Whether the input is required. If required and not present, will throw. Defaults to false */
-  required?: boolean
-}