diff --git a/.github/workflows/check_and_deploy.yml b/.github/workflows/check_and_deploy.yml
index e85e58c..77f4ca9 100644
--- a/.github/workflows/check_and_deploy.yml
+++ b/.github/workflows/check_and_deploy.yml
@@ -44,7 +44,8 @@ jobs:
       - name: Run tests
         run: |
           mkdir summary
-          pytest --cov=dataclassbase --cov-report=markdown-append:summary/coverage.md --markdown-summary-file=summary/summary.md
+          coverage run -m pytest tests --markdown-summary-file=summary/summary.md
+          coverage report --format=markdown > summary/coverage.md
           echo -e "# Summary\n" >> $GITHUB_STEP_SUMMARY
           cat summary/summary.md >> $GITHUB_STEP_SUMMARY
           echo -e "\n# Coverage\n" >> $GITHUB_STEP_SUMMARY
diff --git a/pyproject.toml b/pyproject.toml
index c3883f4..ab006f8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -63,3 +63,9 @@ python_version = "3.14"
 strict = true
 
 [tool.setuptools_scm]
+
+[tool.coverage.run]
+source = ["dataclassbase"]
+omit = [
+    "tests/*"
+]
\ No newline at end of file