diff --git a/setup.cfg b/setup.cfg
index d20cfa2..edb3a13 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -2,3 +2,6 @@
 # Follow what the style_checker does in terms of the extend-ignore...
 extend-ignore = E203,E402
 exclude = tests
+# We want the code to be formatted by black, which uses a max-line-length
+# of 88 characters, so tell flake8 we allow this.
+max-line-length = 88