diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7bb4b15..d5298e3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,23 +14,21 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v2
         with:
-          node-version: 12.x
-      - uses: actions/setup-python@v2
-        with:
-          python-version: '3.x'
+          node-version: 16.x
+          cache: npm
       - run: npm ci
       - run: npm run build
       - run: npm run format-check
       - run: npm run lint
       - run: npm run test
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v3
         with:
           name: dist
           path: dist
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v3
         with:
           name: action.yml
           path: action.yml
@@ -43,16 +41,16 @@ jobs:
       matrix:
         target: [built, committed]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           ref: main
       - if: matrix.target == 'built' || github.event_name == 'pull_request'
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v3
         with:
           name: dist
           path: dist
       - if: matrix.target == 'built' || github.event_name == 'pull_request'
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v3
         with:
           name: action.yml
           path: .
@@ -112,8 +110,8 @@ jobs:
     needs: [test]
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/download-artifact@v2
+      - uses: actions/checkout@v3
+      - uses: actions/download-artifact@v3
         with:
           name: dist
           path: dist
diff --git a/.github/workflows/cpr-example-command.yml b/.github/workflows/cpr-example-command.yml
index d383f45..c14f765 100644
--- a/.github/workflows/cpr-example-command.yml
+++ b/.github/workflows/cpr-example-command.yml
@@ -6,7 +6,7 @@ jobs:
   createPullRequest:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Make changes to pull request
         run: date +%s > report.txt
diff --git a/README.md b/README.md
index 0980ba6..f2a42b0 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ Create Pull Request action will:
 
 - [Concepts, guidelines and advanced usage](docs/concepts-guidelines.md)
 - [Examples](docs/examples.md)
-- [Updating to v3](docs/updating.md)
+- [Updating to v4](docs/updating.md)
 
 ## Usage
 
@@ -31,10 +31,10 @@ Create Pull Request action will:
       # Make changes to pull request here
 
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v4
 ```
 
-You can also pin to a [specific release](https://github.com/peter-evans/create-pull-request/releases) version in the format `@v3.x.x`
+You can also pin to a [specific release](https://github.com/peter-evans/create-pull-request/releases) version in the format `@v4.x.x`
 
 ### Action inputs
 
@@ -68,7 +68,7 @@ All inputs are **optional**. If not set, sensible defaults will be used.
 For self-hosted runners behind a corporate proxy set the `https_proxy` environment variable.
 ```yml
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v4
         env:
           https_proxy: http://<proxy_address>:<port>
 ```
@@ -88,7 +88,7 @@ Note that in order to read the step outputs the action step must have an id.
 ```yml
       - name: Create Pull Request
         id: cpr
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v4
       - name: Check outputs
         if: ${{ steps.cpr.outputs.pull-request-number }}
         run: |
@@ -152,7 +152,7 @@ All file changes that do not match one of the paths will be discarded.
 
 ```yml
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v4
         with:
           add-paths: |
             *.java
@@ -179,7 +179,7 @@ Note that the repository must be checked out on a branch with a remote, it won't
       - name: Uncommitted change
         run: date +%s > report.txt
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v4
 ```
 
 ### Create a project card
@@ -189,7 +189,7 @@ To create a project card for the pull request, pass the `pull-request-number` st
 ```yml
       - name: Create Pull Request
         id: cpr
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v4
 
       - name: Create or Update Project Card
         if: ${{ steps.cpr.outputs.pull-request-number }}
@@ -224,7 +224,7 @@ jobs:
 
       - name: Create Pull Request
         id: cpr
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v4
         with:
           token: ${{ secrets.PAT }}
           commit-message: Update report
diff --git a/action.yml b/action.yml
index 60e3ade..09290a8 100644
--- a/action.yml
+++ b/action.yml
@@ -81,7 +81,7 @@ outputs:
   pull-request-head-sha:
     description: 'The commit SHA of the pull request branch.'
 runs:
-  using: 'node12'
+  using: 'node16'
   main: 'dist/index.js'
 branding:
   icon: 'git-pull-request'
diff --git a/dist/index.js b/dist/index.js
index f4a2a38..6144a21 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -1085,9 +1085,9 @@ function run() {
                 commitMessage: core.getInput('commit-message'),
                 committer: core.getInput('committer'),
                 author: core.getInput('author'),
-                signoff: core.getInput('signoff') === 'true',
+                signoff: core.getBooleanInput('signoff'),
                 branch: core.getInput('branch'),
-                deleteBranch: core.getInput('delete-branch') === 'true',
+                deleteBranch: core.getBooleanInput('delete-branch'),
                 branchSuffix: core.getInput('branch-suffix'),
                 base: core.getInput('base'),
                 pushToFork: core.getInput('push-to-fork'),
@@ -1098,7 +1098,7 @@ function run() {
                 reviewers: utils.getInputAsArray('reviewers'),
                 teamReviewers: utils.getInputAsArray('team-reviewers'),
                 milestone: Number(core.getInput('milestone')),
-                draft: core.getInput('draft') === 'true'
+                draft: core.getBooleanInput('draft')
             };
             core.debug(`Inputs: ${(0, util_1.inspect)(inputs)}`);
             yield (0, create_pull_request_1.createPullRequest)(inputs);
diff --git a/docs/concepts-guidelines.md b/docs/concepts-guidelines.md
index 4430fc0..f097710 100644
--- a/docs/concepts-guidelines.md
+++ b/docs/concepts-guidelines.md
@@ -88,7 +88,7 @@ In these cases, you *must supply* the `base` input so the action can rebase chan
 Workflows triggered by [`pull_request`](https://docs.github.com/en/actions/reference/events-that-trigger-workflows#pull_request) events will by default check out a merge commit. Set the `base` input as follows to base the new pull request on the current pull request's branch.
 
 ```yml
-      - uses: peter-evans/create-pull-request@v3
+      - uses: peter-evans/create-pull-request@v4
         with:
           base: ${{ github.head_ref }}
 ```
@@ -96,7 +96,7 @@ Workflows triggered by [`pull_request`](https://docs.github.com/en/actions/refer
 Workflows triggered by [`release`](https://docs.github.com/en/actions/reference/events-that-trigger-workflows#release) events will by default check out a tag. For most use cases, you will need to set the `base` input to the branch name of the tagged commit.
 
 ```yml
-      - uses: peter-evans/create-pull-request@v3
+      - uses: peter-evans/create-pull-request@v4
         with:
           base: main
 ```
@@ -173,14 +173,14 @@ This action uses [ncc](https://github.com/vercel/ncc) to compile the Node.js cod
 Checking out a branch from a different repository from where the workflow is executing will make *that repository* the target for the created pull request. In this case, a `repo` scoped [Personal Access Token (PAT)](https://docs.github.com/en/github/authenticating-to-github/creating-a-personal-access-token) is required.
 
 ```yml
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           token: ${{ secrets.PAT }}
           repository: owner/repo
 
       # Make changes to pull request here
 
-      - uses: peter-evans/create-pull-request@v3
+      - uses: peter-evans/create-pull-request@v4
         with:
           token: ${{ secrets.PAT }}
 ```
@@ -200,14 +200,14 @@ How to use SSH (deploy keys) with create-pull-request action:
 
 ```yml
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           ssh-key: ${{ secrets.SSH_PRIVATE_KEY }}
 
       # Make changes to pull request here
 
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v4
 ```
 
 ### Push pull request branches to a fork
@@ -225,11 +225,11 @@ It will use their own fork to push code and create the pull request.
 6. As shown in the following example workflow, set the `push-to-fork` input to the full repository name of the fork.
 
 ```yaml
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       # Make changes to pull request here
 
-      - uses: peter-evans/create-pull-request@v3
+      - uses: peter-evans/create-pull-request@v4
         with:
           token: ${{ secrets.MACHINE_USER_PAT }}
           push-to-fork: machine-user/fork-of-repository
@@ -261,7 +261,7 @@ GitHub App generated tokens are more secure than using a PAT because GitHub App
 
 ```yaml
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - uses: tibdex/github-app-token@v1
         id: generate-token
@@ -272,7 +272,7 @@ GitHub App generated tokens are more secure than using a PAT because GitHub App
       # Make changes to pull request here
 
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v4
         with:
           token: ${{ steps.generate-token.outputs.token }}
 ```
@@ -301,7 +301,7 @@ The action can use GPG to sign commits with a GPG key that you generate yourself
 
 ```yaml
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - uses: crazy-max/ghaction-import-gpg@v3
         with:
@@ -313,7 +313,7 @@ The action can use GPG to sign commits with a GPG key that you generate yourself
       # Make changes to pull request here
 
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v4
         with:
           token: ${{ secrets.PAT }}
           committer: example <email@example.com>
@@ -338,12 +338,12 @@ jobs:
       - name: Install dependencies
         run: apk --no-cache add git
 
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       # Make changes to pull request here
 
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v4
 ```
 
 **Ubuntu container example:**
@@ -361,10 +361,10 @@ jobs:
           add-apt-repository -y ppa:git-core/ppa
           apt-get install -y git
 
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       # Make changes to pull request here
 
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v4
 ```
diff --git a/docs/examples.md b/docs/examples.md
index 7930e84..980143c 100644
--- a/docs/examples.md
+++ b/docs/examples.md
@@ -43,14 +43,14 @@ jobs:
   updateAuthors:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           fetch-depth: 0
       - name: Update AUTHORS
         run: |
           git log --format='%aN <%aE>%n%cN <%cE>' | sort -u > AUTHORS
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v4
         with:
           commit-message: update authors
           title: Update AUTHORS
@@ -74,7 +74,7 @@ jobs:
   productionPromotion:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           ref: production
       - name: Reset promotion branch
@@ -82,7 +82,7 @@ jobs:
           git fetch origin main:main
           git reset --hard main
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v4
         with:
           branch: production-promotion
 ```
@@ -107,7 +107,7 @@ jobs:
   updateChangelog:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           fetch-depth: 0
       - name: Update Changelog
@@ -117,7 +117,7 @@ jobs:
           ./git-chglog -o CHANGELOG.md
           rm git-chglog
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v4
         with:
           commit-message: update changelog
           title: Update Changelog
@@ -145,8 +145,8 @@ jobs:
   update-dep:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v2
         with:
           node-version: '12.x'
       - name: Update dependencies
@@ -154,7 +154,7 @@ jobs:
           npx -p npm-check-updates ncu -u
           npm install
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v4
         with:
             token: ${{ secrets.PAT }}
             commit-message: Update dependencies
@@ -181,8 +181,8 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v2
         with:
           node-version: 12.x
       - run: npm ci
@@ -205,16 +205,17 @@ jobs:
   update-dep:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-java@v1
+      - uses: actions/checkout@v3
+      - uses: actions/setup-java@v2
         with:
+          distribution: 'temurin'
           java-version: 1.8
       - name: Grant execute permission for gradlew
         run: chmod +x gradlew
       - name: Perform dependency resolution and write new lockfiles
         run: ./gradlew dependencies --write-locks
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v4
         with:
             token: ${{ secrets.PAT }}
             commit-message: Update dependencies
@@ -242,14 +243,14 @@ jobs:
   update-dep:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Update dependencies
         run: |
           cargo install cargo-edit
           cargo update
           cargo upgrade --to-lockfile
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v4
         with:
             token: ${{ secrets.PAT }}
             commit-message: Update dependencies
@@ -277,7 +278,7 @@ jobs:
   updateSwagger:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Get Latest Swagger UI Release
         id: swagger-ui
         run: |
@@ -305,7 +306,7 @@ jobs:
           # Update current release
           echo ${{ steps.swagger-ui.outputs.release_tag }} > swagger-ui.version
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v4
         with:
           commit-message: Update swagger-ui to ${{ steps.swagger-ui.outputs.release_tag }}
           title: Update SwaggerUI to ${{ steps.swagger-ui.outputs.release_tag }}
@@ -340,7 +341,7 @@ jobs:
   updateFork:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           repository: fork-owner/repo
       - name: Reset the default branch with upstream changes
@@ -349,7 +350,7 @@ jobs:
           git fetch upstream main:upstream-main
           git reset --hard upstream-main
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v4
         with:
           token: ${{ secrets.PAT }}
           branch: upstream-changes
@@ -368,7 +369,7 @@ jobs:
   format:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Download website
         run: |
           wget \
@@ -382,7 +383,7 @@ jobs:
             --domains quotes.toscrape.com \
             http://quotes.toscrape.com/
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v4
         with:
           commit-message: update local website copy
           title: Automated Updates to Local Website Copy
@@ -464,7 +465,7 @@ jobs:
     if: startsWith(github.head_ref, 'autopep8-patches') == false && github.event.pull_request.head.repo.full_name == github.repository
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           ref: ${{ github.head_ref }}
       - name: autopep8
@@ -477,7 +478,7 @@ jobs:
         run: echo ::set-output name=branch-name::"autopep8-patches/${{ github.head_ref }}"
       - name: Create Pull Request
         if: steps.autopep8.outputs.exit-code == 2
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v4
         with:
           commit-message: autopep8 action fixes
           title: Fixes by autopep8 action
@@ -511,13 +512,13 @@ jobs:
     if: startsWith(github.ref, 'refs/heads/')
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       ...
 
   someOtherJob:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       ...
 ```
 
@@ -535,7 +536,7 @@ The recommended method is to use [`set-output`](https://docs.github.com/en/actio
           echo ::set-output name=pr_body::"This PR was auto-generated on $(date +%d-%m-%Y) \
             by [create-pull-request](https://github.com/peter-evans/create-pull-request)."
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v4
         with:
           title: ${{ steps.vars.outputs.pr_title }}
           body: ${{ steps.vars.outputs.pr_body }}
@@ -556,7 +557,7 @@ The content must be [escaped to preserve newlines](https://github.community/t/se
           echo ::set-output name=body::$body
 
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v4
         with:
           body: ${{ steps.get-pr-body.outputs.body }}
 ```
@@ -581,7 +582,7 @@ The template is rendered using the [render-template](https://github.com/chuhlomi
             bar: that
 
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v4
         with:
           body: ${{ steps.template.outputs.result }}
 ```
diff --git a/docs/updating.md b/docs/updating.md
index db64ed3..b33423c 100644
--- a/docs/updating.md
+++ b/docs/updating.md
@@ -1,3 +1,15 @@
+## Updating from `v3` to `v4`
+
+### Breaking changes
+
+- If using self-hosted runners or GitHub Enterprise Server, there are minimum requirements for `v4` to run. See "What's new" below for details.
+
+### What's new
+
+- Updated runtime to Node.js 16
+  - The action now requires a minimum version of v2.285.0 for the [Actions Runner](https://github.com/actions/runner/releases/tag/v2.285.0).
+  - If using GitHub Enterprise Server, the action requires [GHES 3.4](https://docs.github.com/en/enterprise-server@3.4/admin/release-notes) or later.
+
 ## Updating from `v2` to `v3`
 
 ### Breaking changes
@@ -31,7 +43,7 @@
           push-to-fork: machine-user/fork-of-repository
   ```
 
-### New features
+### What's new
 
 - The action has been converted to Typescript giving it a significant performance improvement.
 
@@ -66,7 +78,7 @@
 
   If neither `author` or `committer` are set the action will default to making commits as the GitHub Actions bot user.
 
-### New features
+### What's new
 
 - Unpushed commits made during the workflow before the action runs will now be considered as changes to be raised in the pull request. See [Create your own commits](https://github.com/peter-evans/create-pull-request#create-your-own-commits) for details.
 - New commits made to the pull request base will now be taken into account when pull requests are updated.
diff --git a/package.json b/package.json
index b758ea4..86bb83e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "create-pull-request",
-  "version": "3.0.0",
+  "version": "4.0.0",
   "private": true,
   "description": "Creates a pull request for changes to your repository in the actions workspace",
   "main": "lib/main.js",
diff --git a/src/main.ts b/src/main.ts
index 45a1ae8..f3d9171 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -12,9 +12,9 @@ async function run(): Promise<void> {
       commitMessage: core.getInput('commit-message'),
       committer: core.getInput('committer'),
       author: core.getInput('author'),
-      signoff: core.getInput('signoff') === 'true',
+      signoff: core.getBooleanInput('signoff'),
       branch: core.getInput('branch'),
-      deleteBranch: core.getInput('delete-branch') === 'true',
+      deleteBranch: core.getBooleanInput('delete-branch'),
       branchSuffix: core.getInput('branch-suffix'),
       base: core.getInput('base'),
       pushToFork: core.getInput('push-to-fork'),
@@ -25,7 +25,7 @@ async function run(): Promise<void> {
       reviewers: utils.getInputAsArray('reviewers'),
       teamReviewers: utils.getInputAsArray('team-reviewers'),
       milestone: Number(core.getInput('milestone')),
-      draft: core.getInput('draft') === 'true'
+      draft: core.getBooleanInput('draft')
     }
     core.debug(`Inputs: ${inspect(inputs)}`)