diff --git a/.github/workflows/lock-issue.yml b/.github/workflows/lock-issue.yml
index 6a9aed9..6fc1122 100644
--- a/.github/workflows/lock-issue.yml
+++ b/.github/workflows/lock-issue.yml
@@ -32,6 +32,8 @@ jobs:
     steps:
       - uses: dessant/lock-threads@v4
         with:
+# The BOT_GITHUB_TOKEN secret must be set in the repository settings and contain a valid GitHub token.
+# If the secret is not set or contains an invalid token, the workflow will fail with a "Bad credentials" error.
           github-token: ${{ secrets.BOT_GITHUB_TOKEN }}
           issue-inactive-days: '365'
           exclude-issue-created-before: ''