diff --git a/.github/workflows/pull_request.yaml b/.github/workflows/pull_request.yaml
index 8c1f691..5c7c261 100644
--- a/.github/workflows/pull_request.yaml
+++ b/.github/workflows/pull_request.yaml
@@ -3,6 +3,10 @@ name: Pull Request
 on: pull_request
 
 jobs:
+  dco:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: KineticCafe/actions-dco@v3.2.0
   pre-push:
     strategy:
       matrix: