diff --git a/template/pyproject.toml.jinja b/template/pyproject.toml.jinja
index 8623ebb3..ff20f827 100644
--- a/template/pyproject.toml.jinja
+++ b/template/pyproject.toml.jinja
@@ -71,6 +71,7 @@ filterwarnings = "error"
 testpaths = "docs src tests"
 
 [tool.coverage.run]
+patch = ["subprocess"]
 data_file = "/tmp/{{ package_name }}.coverage"
 
 [tool.coverage.paths]