diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
index f3b66c2c8..2b4283747 100644
--- a/.github/workflows/unit-tests.yml
+++ b/.github/workflows/unit-tests.yml
@@ -35,8 +35,23 @@ jobs:
             - '*/src/cbor/lib/*'
           coverage-data-path: ${{ env.COVERAGE_DATA_PATH }}
 
+      # A token is used to avoid intermittent spurious job failures caused by rate limiting.
+      - name: Set up Codecov upload token
+        run: |
+          if [[ "${{ github.repository }}" == "arduino-libraries/ArduinoIoTCloud" ]]; then
+            # In order to avoid uploads of data from forks, only use the token for runs in the parent repo.
+            # Token is intentionally exposed.
+            # See: https://community.codecov.com/t/upload-issues-unable-to-locate-build-via-github-actions-api/3954
+            CODECOV_TOKEN="47827969-3fda-4ba1-9506-e8d0834ed88c"
+          else
+            # codecov/codecov-action does unauthenticated upload if empty string is passed via the `token` input.
+            CODECOV_TOKEN=""
+          fi
+          echo "CODECOV_TOKEN=$CODECOV_TOKEN" >> "$GITHUB_ENV"
+
       - name: Upload coverage report to Codecov
-        uses: codecov/codecov-action@v1
+        uses: codecov/codecov-action@v3
         with:
           file: "${{ env.COVERAGE_DATA_PATH }}"
           fail_ci_if_error: true
+          token: ${{ env.CODECOV_TOKEN }}