diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 0db5f40..f906009 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -22,7 +22,7 @@ jobs:
         conda run --name rxn-env poetry install
         conda run --name rxn-env inv run-tests
     - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v1
+      uses: codecov/codecov-action@v4
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
         files: ./coverage.xml