diff --git a/setup.cfg b/setup.cfg
index 48e87f8a5d..92cb38070e 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,4 +1,4 @@
 [flake8]
 max-line-length = 160
 builtins = _,dynamic_property,__,P,I,lopen,icu_lower,icu_upper,icu_title,ngettext
-ignore = E12,E203,E22,E231,E241,E301,E302,E304,E401,E402,W391
+ignore = E12,E203,E22,E231,E241,E301,E302,E304,E401,E402,E731,W391