diff --git a/pyproject.toml b/pyproject.toml
index 84c2be3..97df3f9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -49,12 +49,12 @@ dependencies = [
 path = "meanas/__init__.py"
 
 [project.optional-dependencies]
-dev = ["pytest", "pdoc", "gridlock"]
+dev = ["pytest", "coverage", "pdoc", "gridlock"]
 examples = [
     "gridlock>=2.1",
     "matplotlib>=3.10.8",
 ]
-test = ["pytest"]
+test = ["pytest", "coverage"]
 
 
 [tool.ruff]
@@ -100,5 +100,16 @@ module = [
     ]
 ignore_missing_imports = true
 
-[tool.uv.sources]
-gridlock = { path = "../gridlock", editable = true }
+#[tool.uv.sources]
+#gridlock = { path = "../gridlock", editable = true }
+
+[tool.pytest.ini_options]
+addopts = "-rsXx"
+testpaths = ["meanas"]
+
+[tool.coverage.run]
+source = ["meanas"]
+
+[tool.coverage.report]
+show_missing = true
+omit = ["meanas/test/*"]