diff --git a/.coveragerc b/.coveragerc
index f710d1bb..3dd5f348 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -18,3 +18,5 @@ exclude_lines =
     pragma: no cover
     if __name__ == '__main__':
     if typing.TYPE_CHECKING
+
+fail_under = 40