diff --git a/.github/workflows/r.yml b/.github/workflows/r.yml
index 6b47474..223325f 100644
--- a/.github/workflows/r.yml
+++ b/.github/workflows/r.yml
@@ -1,4 +1,4 @@
-# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
+# Workflow derived from https://github.com/r-lib/actions/tree/master/examples
 # Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
 on:
   push:
@@ -18,7 +18,7 @@ jobs:
       fail-fast: false
       matrix:
         config:
-          - {os: macos-latest,   r: 'release'}
+          - {os: macOS-latest,   r: 'release'}
           - {os: windows-latest, r: 'release'}
           - {os: ubuntu-latest,   r: 'release'}
 
@@ -27,7 +27,7 @@ jobs:
       R_KEEP_PKG_SOURCE: yes
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
 
       - uses: r-lib/actions/setup-pandoc@v2
 
@@ -39,9 +39,18 @@ jobs:
 
       - uses: r-lib/actions/setup-r-dependencies@v2
         with:
-          extra-packages: any::rcmdcheck
-          needs: check
+          extra-packages: rcmdcheck
 
       - uses: r-lib/actions/check-r-package@v2
+
+      - name: Show testthat output
+        if: always()
+        run: find check -name 'testthat.Rout*' -exec cat '{}' \; || true
+        shell: bash
+
+      - name: Upload check results
+        if: failure()
+        uses: actions/upload-artifact@main
         with:
-          upload-snapshots: true
+          name: ${{ runner.os }}-r${{ matrix.config.r }}-results
+          path: check