diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 54995bc..d1097e0 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -47,7 +47,7 @@ jobs:
       # We don't want to push coverge for every job in the matrix.
       # Rather arbitrarily, choose to push on Ubuntu with Python 3.7.
       if: matrix.python-version == '3.7' && matrix.os == 'ubuntu-latest'  && (github.event_name == 'push' || github.event_name == 'pull_request')
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v4
       with:
         file: ./coverage.xml
         # Ignore codecov failures as the codecov server is not