diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index dc65120..c5ade04 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -87,7 +87,7 @@ jobs:
     -
       name: Upload coverage to Codecov
       if: matrix.python-version == '3.10'
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v4
       with:
         # not required for public repos, but intermittently fails otherwise
         token: ${{ secrets.CODECOV_TOKEN }}