diff --git a/.github/workflows/ember-cli-code-coverage.yml b/.github/workflows/ember-cli-code-coverage.yml
index 4886abd6..76ce49c0 100644
--- a/.github/workflows/ember-cli-code-coverage.yml
+++ b/.github/workflows/ember-cli-code-coverage.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - name: ember-cli-code-coverage-action
         uses: ./ # Uses an action in the root directory
         id: ember-cli-code-coverage-action
diff --git a/index.js b/index.js
index 046549b4..b9c81aa9 100644
--- a/index.js
+++ b/index.js
@@ -14,7 +14,6 @@ async function run() {
     let coverageFilePath = getInput('coverage-file', { required: true });
     let coverageIndicator = getInput('coverage-indicator', { required: true });
     let workingDirectory = getInput('working-directory', { required: true });
-    
 
     octokit = new GitHub(myToken);
     let pullRequest = await getPullRequest();
@@ -27,6 +26,7 @@ New test coverage: ${testCoverage}%
     
     `);
 
+    await exec(`git fetch origin ${pullRequest.base.sha}`);
     await exec(`git checkout ${pullRequest.base.sha}`);
 
     // This could fail, e.g. if no test coverage existed before