diff --git a/.coveragerc b/.coveragerc
index 2e3f4dd..4db98af 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -2,6 +2,7 @@
 omit =
 	# leading `*/` for pytest-dev/pytest-cov#456
 	*/.tox/*
+	_functools.py
 disable_warnings =
 	couldnt-parse