diff --git a/pyproject.toml b/pyproject.toml
index 50c8670..2f01455 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -21,3 +21,11 @@ where = ["src"]
 [tool.ruff]
 ignore = ["E701", "E702", "E741", "F841", "F821", "B008", "F401", "F601", "E402"]
 target-version = "py311"
+
+[tool.coverage.run]
+branch = true
+source = ["src"]
+omit = ["tests/*", "*/external/*"]
+
+[tool.coverage.report]
+show_missing = true