diff --git a/.github/workflows/unit_tests.yml b/.github/workflows/unit_tests.yml
index af70b47..8d25057 100644
--- a/.github/workflows/unit_tests.yml
+++ b/.github/workflows/unit_tests.yml
@@ -56,7 +56,7 @@ jobs:
 
     - name: Upload Results to CodeCov
       if: success()
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v4
       with:
         env_vars: TOXENV
         fail_ci_if_error: false