diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 553df586..b50828c1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -37,7 +37,7 @@ jobs:
     - name: Run tests and collect coverage
       run: python -m pytest --cov=smact --cov-report=xml -v
     - name: Upload coverage reports to CodeCov
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v4
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
         #files: ./coverage.xml