diff --git a/__test__/utils.unit.test.ts b/__test__/utils.unit.test.ts
index 6a68eb8..3da2439 100644
--- a/__test__/utils.unit.test.ts
+++ b/__test__/utils.unit.test.ts
@@ -17,6 +17,14 @@ describe('utils tests', () => {
     }
   })
 
+  test('getStringAsArray splits string input by newlines and commas', async () => {
+    const array = utils.getStringAsArray('1, 2, 3\n4, 5, 6')
+    expect(array.length).toEqual(6)
+
+    const array2 = utils.getStringAsArray('')
+    expect(array2.length).toEqual(0)
+  })
+
   test('getRepoPath successfully returns the path to the repository', async () => {
     expect(utils.getRepoPath()).toEqual(process.env['GITHUB_WORKSPACE'])
     expect(utils.getRepoPath('foo')).toEqual(
diff --git a/src/main.ts b/src/main.ts
index ce69b4e..f3d9171 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -1,13 +1,14 @@
 import * as core from '@actions/core'
 import {Inputs, createPullRequest} from './create-pull-request'
 import {inspect} from 'util'
+import * as utils from './utils'
 
 async function run(): Promise<void> {
   try {
     const inputs: Inputs = {
       token: core.getInput('token'),
       path: core.getInput('path'),
-      addPaths: core.getMultilineInput('add-paths'),
+      addPaths: utils.getInputAsArray('add-paths'),
       commitMessage: core.getInput('commit-message'),
       committer: core.getInput('committer'),
       author: core.getInput('author'),
@@ -19,10 +20,10 @@ async function run(): Promise<void> {
       pushToFork: core.getInput('push-to-fork'),
       title: core.getInput('title'),
       body: core.getInput('body'),
-      labels: core.getMultilineInput('labels'),
-      assignees: core.getMultilineInput('assignees'),
-      reviewers: core.getMultilineInput('reviewers'),
-      teamReviewers: core.getMultilineInput('team-reviewers'),
+      labels: utils.getInputAsArray('labels'),
+      assignees: utils.getInputAsArray('assignees'),
+      reviewers: utils.getInputAsArray('reviewers'),
+      teamReviewers: utils.getInputAsArray('team-reviewers'),
       milestone: Number(core.getInput('milestone')),
       draft: core.getBooleanInput('draft')
     }
diff --git a/src/utils.ts b/src/utils.ts
index 6202cbe..a491d91 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -2,6 +2,20 @@ import * as core from '@actions/core'
 import * as fs from 'fs'
 import * as path from 'path'
 
+export function getInputAsArray(
+  name: string,
+  options?: core.InputOptions
+): string[] {
+  return getStringAsArray(core.getInput(name, options))
+}
+
+export function getStringAsArray(str: string): string[] {
+  return str
+    .split(/[\n,]+/)
+    .map(s => s.trim())
+    .filter(x => x !== '')
+}
+
 export function getRepoPath(relativePath?: string): string {
   let githubWorkspacePath = process.env['GITHUB_WORKSPACE']
   if (!githubWorkspacePath) {