diff --git a/.github/workflows/lockthreads.yml b/.github/workflows/lockthreads.yml
index 11e571abf68..f3ec106a6e6 100644
--- a/.github/workflows/lockthreads.yml
+++ b/.github/workflows/lockthreads.yml
@@ -12,3 +12,4 @@ jobs:
         with:
           github-token: ${{ github.token }}
           pr-lock-inactive-days: '90'
+          process-only: 'prs'