diff --git a/.github/workflows/run_tests.yml b/.github/workflows/run_tests.yml
index 0b0cc88..e9792fd 100644
--- a/.github/workflows/run_tests.yml
+++ b/.github/workflows/run_tests.yml
@@ -45,21 +45,21 @@ jobs:
 
       - name: Archive test results
         if: ${{ always() }}
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: test result (Python 3.9)
           path: test_results.txt
 
       - name: Archive code coverage report (plain text)
         if: ${{ always() }}
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: code coverage report (plain text)
           path: coverage_report.txt
 
       - name: Archive code coverage report (HTML)
         if: ${{ always() }}
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: code coverage report (HTML)
           path: htmlcov/*