diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index f2a5f03..59d75c9 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -49,7 +49,7 @@ jobs:
 
     - name: Upload to Codecov
       if: github.repository == 'chrisjsewell/pytest-notebook'
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v4
       with:
         name: pytests-notebook
         token: ${{ secrets.CODECOV_TOKEN }}