diff --git a/index.js b/index.js
index 7b7e70e..a21a8b2 100644
--- a/index.js
+++ b/index.js
@@ -156,6 +156,12 @@ async function commitChanges(filePath) {
       `https://api.github.com/repos/${owner}/${repo}/git/refs/heads/${branch}`,
       {
         sha: newCommitSha,
+      },
+      {
+        headers: {
+          'Accept': 'application/vnd.github+json',
+          'Authorization': `Bearer ${githubToken}`,
+        },
       }
     );