diff --git a/.github/workflows/secret-scanner.yml b/.github/workflows/secret-scanner.yml
index d713d06..8308b58 100644
--- a/.github/workflows/secret-scanner.yml
+++ b/.github/workflows/secret-scanner.yml
@@ -15,5 +15,12 @@ permissions:
 
 jobs:
   scan:
+    # The reusable's gitleaks job requests pull-requests: write (PR summary
+    # comment) and actions: read (workflow-run metadata) at job level; the
+    # caller must grant at least that or the run startup-fails.
+    permissions:
+      contents: read
+      pull-requests: write
+      actions: read
     uses: hyperpolymath/standards/.github/workflows/secret-scanner-reusable.yml@d135b05bfc647d0c0fbfedc7e80f37ea50f49236
     secrets: inherit