diff --git a/pyproject.toml b/pyproject.toml
index cddbde4b..90d3ed9d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -152,6 +152,7 @@ pycodestyle = [
   "-W1*", "-W2*", "-W3*", "-W5*",
 ]
 "flake8-*" = ["+*"]
+flake8-black = ["-BLK901"]
 
 
 [build-system]