diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 3a88618..6230eee 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -38,7 +38,8 @@ jobs:
       - name: Test with nox
         run: pipx run nox -s tests
       - name: "Upload coverage to Codecov"
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v4
         with:
           fail_ci_if_error: true
-          token: ${{ secrets.CODECOV_TOKEN }} # not required for public repos
+        env:
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}