diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fb23bd64..5e5de7e7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,17 +14,20 @@ jobs:
           python-version: '3.10'
       - name: Install dependencies
         run: pip install -r requirements.txt
-      - name: Run ATS
-        uses: codecov/codecov-ats@v0
-        env:
-          CODECOV_STATIC_TOKEN: ${{ secrets.CODECOV_STATIC_TOKEN }}
-          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
       - name: Run tests and collect coverage
-        run: pytest --cov app ${{ env.CODECOV_ATS_TESTS }}
+        run: pytest --cov app --junitxml=testresults.xml
+        continue-on-error: true
+
+      - name: cat testresults.xml
+        run: cat testresults.xml
+      - name: Install CLI
+        run: pip install --no-cache-dir git+https://github.com/codecov/codecov-cli.git@joseph/test-results-staging
+
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v4-beta
-        with:
-          flags: smart-tests
-          verbose: true
+        run: codecovcli -v -u ${{ secrets.CODECOV_STAGING_API_URL }} upload-process
+        env:
+          CODECOV_TOKEN: ${{ secrets.CODECOV_ORG_TOKEN_STAGING }}
+      - name: Upload test results to Codecov
+        run: codecovcli -v -u ${{ secrets.CODECOV_STAGING_API_URL }} do-upload --report-type test_results --file testresults.xml
         env:
-          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+          CODECOV_TOKEN: ${{ secrets.CODECOV_ORG_TOKEN_STAGING }}
diff --git a/app/test_calculator.py b/app/test_calculator.py
index f5641938..3efaac11 100644
--- a/app/test_calculator.py
+++ b/app/test_calculator.py
@@ -2,7 +2,7 @@
 
 
 def test_add():
-    assert Calculator.add(1, 2) == 3.0
+    assert Calculator.add(1, 2) == 4.0
     assert Calculator.add(1.0, 2.0) == 3.0
     assert Calculator.add(0, 2.0) == 2.0
     assert Calculator.add(2.0, 0) == 2.0