diff --git a/.github/workflows/unittests.yml b/.github/workflows/unittests.yml
index 5e023225..f0ef85f7 100644
--- a/.github/workflows/unittests.yml
+++ b/.github/workflows/unittests.yml
@@ -61,7 +61,7 @@
          if: matrix.os == 'windows-latest'
        
        - name: codecov
-         uses: codecov/codecov-action@v3
+         uses: codecov/codecov-action@v4
          with:
            token: ${{ secrets.CODECOV_TOKEN }}
            file: ./coverage.xml