1 files changed, 1 insertions, 0 deletions
diff --git a/setup.cfg b/setup.cfg
index 908dbe48..e83ca0ab 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -3,6 +3,7 @@ max-line-length = 140
 max-complexity = 25
 ignore = E251,C901
 exclude = mitmproxy/contrib/*,test/mitmproxy/data/*
+builtins = file,open,basestring,xrange,unicode,long,cmp
 
 [pytest]
 testpaths = test