diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d59cfd46f..7bb4b151e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,10 +15,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/setup-node@v2
+      - uses: actions/setup-node@v1
         with:
-          node-version: 16.x
-          cache: npm
+          node-version: 12.x
       - uses: actions/setup-python@v2
         with:
           python-version: '3.x'
diff --git a/action.yml b/action.yml
index 09290a810..60e3adeb7 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: 'node16'
+  using: 'node12'
   main: 'dist/index.js'
 branding:
   icon: 'git-pull-request'
diff --git a/dist/index.js b/dist/index.js
index 6144a21d4..f4a2a3839 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.getBooleanInput('signoff'),
+                signoff: core.getInput('signoff') === 'true',
                 branch: core.getInput('branch'),
-                deleteBranch: core.getBooleanInput('delete-branch'),
+                deleteBranch: core.getInput('delete-branch') === 'true',
                 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.getBooleanInput('draft')
+                draft: core.getInput('draft') === 'true'
             };
             core.debug(`Inputs: ${(0, util_1.inspect)(inputs)}`);
             yield (0, create_pull_request_1.createPullRequest)(inputs);
diff --git a/src/main.ts b/src/main.ts
index f3d9171cb..45a1ae85e 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.getBooleanInput('signoff'),
+      signoff: core.getInput('signoff') === 'true',
       branch: core.getInput('branch'),
-      deleteBranch: core.getBooleanInput('delete-branch'),
+      deleteBranch: core.getInput('delete-branch') === 'true',
       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.getBooleanInput('draft')
+      draft: core.getInput('draft') === 'true'
     }
     core.debug(`Inputs: ${inspect(inputs)}`)