diff --git a/pyproject.toml b/pyproject.toml
index 6c4eb92fb76a4c1f26e672bae182a0b7cb6541a7..6427733b1e68370e56dac7c442c4eaec5db23b94 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -60,7 +60,7 @@ source = ["src"]
 omit = ["types.py"]
 [tool.coverage.report]
 # TODO Increase after we have more test cases
-fail_under = 35
+fail_under = 40
 exclude_lines = [
   "if __name__ == .__main__.:",
 ]