diff --git a/publish.sh b/publish.sh
index dc16392..caf8916 100755
--- a/publish.sh
+++ b/publish.sh
@@ -1,6 +1,7 @@
 #!/bin/bash
 set -e
 
+rm -rf build/
 rm -f dist/*
 mkdir -p dist
 python setup.py sdist bdist_wheel