diff --git a/.github/workflows/ci_tests.yml b/.github/workflows/ci_tests.yml
index 65e84006..5969d0a9 100644
--- a/.github/workflows/ci_tests.yml
+++ b/.github/workflows/ci_tests.yml
@@ -64,7 +64,7 @@ jobs:
 
       - name: Upload Unit Test Coverage to Codecov
         if: ${{ matrix.python-version == '3.11' }}
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v4
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           flags: unit