diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 0005a75..15ef256 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -7,6 +7,7 @@ permissions:
 
 env:
   UV_PYTHON: 3.8 # minimum supported version
+  DASL_TESTING_REF: "56f7fd74a8eb0955670dab139034e845329dca57"
 
 jobs:
   unit_tests:
@@ -29,3 +30,41 @@ jobs:
 
       - name: Run Tests.
         run: uv run pytest
+
+      - name: Checkout dasl-testing.
+        uses: actions/checkout@v4
+        with:
+            repository: hyphacoop/dasl-testing
+            path: dasl-testing
+            ref: ${{ env.DASL_TESTING_REF }}
+
+      - name: Run DASL Python harness.
+        working-directory: dasl-testing/harnesses/python
+        env:
+          UV_PYTHON: "3.13"  # DASL testing requires Python 3.13+
+        run: |
+          RESULT_JSON=$(uv run --with cbor2 python main.py libipld)
+
+          {
+            echo "## DASL Results"
+            echo
+            echo "Metadata:"
+            echo
+            echo "- Link: $(echo "$RESULT_JSON" | jq -r '.metadata.link')"
+            echo "- Version: $(echo "$RESULT_JSON" | jq -r '.metadata.version')"
+            echo
+            echo "### Per-file summary"
+            echo
+            echo "| File | Total | Passed | Failed |"
+            echo "|------|-------|--------|--------|"
+            echo "$RESULT_JSON" | jq -r '
+              .files
+              | to_entries[]
+              | .key as $file
+              | ( [ .value[] | .pass ] ) as $passes
+              | ($passes | length) as $total
+              | ($passes | map(select(. == true)) | length) as $passed
+              | ($total - $passed) as $failed
+              | "| \($file) | \($total) | \($passed) | \($failed) |"
+            '
+          } >> "$GITHUB_STEP_SUMMARY"