diff --git a/.github/workflows/pyshiny-tests.yaml b/.github/workflows/pyshiny-tests.yaml
index fa350f7..0e13bad 100644
--- a/.github/workflows/pyshiny-tests.yaml
+++ b/.github/workflows/pyshiny-tests.yaml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout (GitHub)
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Build and run dev container tests
         uses: devcontainers/ci@v0.3