diff --git a/.github/workflows/backport.yml b/.github/workflows/backport.yml
index 82b8171..ff25a6d 100644
--- a/.github/workflows/backport.yml
+++ b/.github/workflows/backport.yml
@@ -16,21 +16,26 @@ jobs:
             const parentIssue = context.issue;
             const parentIssueTitle = context.payload.issue.title;
             const parentIssueNumber = parentIssue.number;
+            const repo = parentIssue.repo;
+            const owner = parentIssue.owner;
 
             // Create the sub-issue
             const newIssue = await github.rest.issues.create({
-              owner: parentIssue.owner,
-              repo: parentIssue.repo,
+              owner: owner,
+              repo: repo,
               title: `Backport #" + parentIssueNumber + " to release/v0`,
               body: `"Backport #" + parentIssueNumber + " to release/v0`
             });
 
             const subIssueId = newIssue.data.id;
 
-            // Attach the sub-issue to the parent
-            await github.rest.issues.addSubIssue({
-              owner: parentIssue.owner,
-              repo: parentIssue.repo,
+            // Attach the sub-issue to the parent using API request
+            await github.request('POST /repos/{owner}/{repo}/issues/{parentIssueNumber}/sub_issues', {
+              owner: owner,
+              repo: repo,
               issue_number: parentIssueNumber,
-              sub_issue_id: subIssueId
+              sub_issue_id: subIssueId,
+              headers: {
+                'X-GitHub-Api-Version': '2022-11-28'
+              }
             });