diff --git a/Makefile b/Makefile
index a0f1ad6..45690aa 100644
--- a/Makefile
+++ b/Makefile
@@ -77,6 +77,7 @@
     $<
 
 python-build: setup.py python-protos
+	rm -r dist/
 	python ./setup.py sdist
 
 python-test: tox.ini setup.py python-protos