diff --git a/.github/workflows/ci_unittest.yml b/.github/workflows/ci_unittest.yml
index 950ee64..96542d2 100644
--- a/.github/workflows/ci_unittest.yml
+++ b/.github/workflows/ci_unittest.yml
@@ -57,7 +57,7 @@ jobs:
     if: github.event_name == 'push'
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/download-artifact@v2
+      - uses: actions/download-artifact@v4.1.7
         with:
           name: coverage-html
           path: htmlcov/