diff --git a/pyproject.toml b/pyproject.toml
index c3b020a5..360679bb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -86,6 +86,7 @@ xfail_strict = true
 
 [tool.coverage.run]
 branch = true
+parallel = true
 source = ["boilercv"]
 [tool.coverage.report]
 ignore_errors = true