diff --git a/.github/workflows/run_tests.yml b/.github/workflows/run_tests.yml
index 1b38158..48222b4 100644
--- a/.github/workflows/run_tests.yml
+++ b/.github/workflows/run_tests.yml
@@ -48,7 +48,7 @@ jobs:
         name: coverage-report
         path: test_output/coverage.xml
     - name: "Upload coverage to Codecov"
-      uses: codecov/codecov-action@v2
+      uses: codecov/codecov-action@v4
       with:
         fail_ci_if_error: true
         token: ${{ secrets.CODECOV_TOKEN }} # not required for public repos