diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index 74d3aca..a5abcf9 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -41,6 +41,7 @@ jobs:
           heroku_api_key: ${{secrets.HEROKU_API_KEY}}
           heroku_app_name: svgpathtools-coverage
           heroku_email: ${{secrets.HEROKU_EMAIL}}
+          appdir: htmlcov
 #
 #      # send report to Codacy
 #      - name: Report to Codacy