diff --git a/.github/workflows/triage-issues.yml b/.github/workflows/triage-issues.yml
index 7ef4af3c..7963be26 100644
--- a/.github/workflows/triage-issues.yml
+++ b/.github/workflows/triage-issues.yml
@@ -37,6 +37,7 @@ jobs:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
           days-before-stale: 21
           days-before-close: 7
+          close-issue-reason: "not_planned"
           stale-issue-message: >
             This issue has been automatically marked as stale because it has not had
             recent activity. It will be closed if no further activity occurs.