diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 6dc6e8e..bdd11c3 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -41,6 +41,8 @@ jobs:
         uses: codecov/codecov-action@v4
         if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/master' || github.event_name == 'pull_request' || github.event_name == 'workflow_dispatch' }}
         with:
+          env_vars: OS,PYTHON
+          files: ./coverage.xml
           verbose: true
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
diff --git a/Makefile b/Makefile
index e90302e..66bdc97 100644
--- a/Makefile
+++ b/Makefile
@@ -15,7 +15,7 @@ test: $(TEST_FILE) $(TEST_TWO_FILE)
 	@mkvmerge -J $(TEST_FILE)
 	@echo "Running mkvmerge -J $(TEST_TWO_FILE)..."
 	@mkvmerge -J $(TEST_TWO_FILE)
-	pytest --cov=pymkv $(TEST_DIR)
+	pytest --cov=pymkv $(TEST_DIR) --cov-report=xml
 
 $(TEST_FILE):
 	@if [ ! -f $(TEST_FILE) ]; then \