diff --git a/.github/workflows/selftest.yml b/.github/workflows/selftest.yml
index 6e768f1..9e49651 100644
--- a/.github/workflows/selftest.yml
+++ b/.github/workflows/selftest.yml
@@ -17,4 +17,11 @@ jobs:
         uses: actions/checkout@v2
       - name: Run gotestfmt
         working-directory: testdata
-        run: go test -v ./... | gotestfmt
+        run: go test -v ./... 2>&1 | tee /tmp/gotest.log | gotestfmt
+      - name: Upload test log
+        uses: actions/upload-artifact@v2
+        if: always()
+        with:
+          name: test-log
+          path: /tmp/gotest.log
+          if-no-files-found: error
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