readme_renderer is now run through twine
diff --git a/Makefile b/Makefile
index 24d5ffe..a62c902 100644
--- a/Makefile
+++ b/Makefile
@@ -65,7 +65,7 @@
 # Kitting
 
 kit:
-	python setup.py sdist --formats=gztar
+	python setup.py sdist
 
 wheel:
 	tox -c tox_wheels.ini $(ARGS)
diff --git a/tox.ini b/tox.ini
index 303d228..df1c9a1 100644
--- a/tox.ini
+++ b/tox.ini
@@ -86,7 +86,8 @@
     python -m tabnanny {env:LINTABLE}
     python igor.py check_eol
     check-manifest --ignore 'lab*,perf*,doc/sample_html*,.treerc'
-    python setup.py check -r -s
+    python setup.py -q sdist bdist_wheel
+    twine check dist/*
     python -m pylint --notes= {env:LINTABLE}
 
 [travis]