diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c8884e5..9e38269 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -63,9 +63,10 @@ jobs:
           bundle exec rake coverage
 
       - name: Upload coverage report
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v4
         with:
           name: ${{ runner.os }}-${{ matrix.ruby }}-frozen_string_literal-${{ matrix.frozen_string_literal }}
           file: ./coverage/coverage.xml
-          token: ${{ secrets.CODECOV_TOKEN }}
           fail_ci_if_error: true
+        env:
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}