diff --git a/setup.cfg b/setup.cfg
index 2c446b4..b83eb86 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,8 +1,9 @@
 [flake8]
 # E203: whitespaces before ':' <https://github.com/psf/black/issues/315>
 # E231: missing whitespace after ','
 # E501: line too long, use B950 warning from flake8-bugbear instead
 # W503: line break before binary operator <https://github.com/psf/black/issues/52>
 select = C,E,F,W,B950
 ignore = E203,E231,E501,W503
 max-line-length = 88
+extend_exclude = swh/graph/rpc