diff --git a/.github/workflows/unit_tests.yml b/.github/workflows/unit_tests.yml
index c0d7780..a65b7d6 100644
--- a/.github/workflows/unit_tests.yml
+++ b/.github/workflows/unit_tests.yml
@@ -36,16 +36,16 @@ jobs:
         run: |
           pytest tests/test_utils.py --doctest-modules --junitxml=tests/util-test-results.xml
       - name: Upload Util test results
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
-          name: util-test-results
+          name: util-test-results-${{ matrix.python-version }}
           path: tests/util-test-results.xml
 
       - name: Test Service
         run: |
           pytest tests/test_messagebus_service.py --doctest-modules --junitxml=tests/messagebus-service-test-results.xml
       - name: Upload Messagebus service test results
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
-          name: messagebus-service-test-results
+          name: messagebus-service-test-results-${{ matrix.python-version }}
           path: tests/messagebus-service-test-results.xml