diff --git a/scripts/release.sh b/scripts/release.sh
index 63b5cc9..9dd8cb4 100755
--- a/scripts/release.sh
+++ b/scripts/release.sh
@@ -41,7 +41,8 @@ git commit -m "Release $NEW_VERSION"
 git tag -s -m "Release $NEW_VERSION" "$NEW_VERSION"
 git push --follow-tags
 
-python setup.py sdist upload -r pypi
+python3 setup.py sdist
+twine upload -r pypi "dist/kas-$NEW_VERSION.tar.gz"
 
 authors=$(git shortlog -s "$OLD_VERSION".."$NEW_VERSION" | cut -c8- | paste -s -d, - | sed -e 's/,/, /g')
 highlights=$(sed -e "/$OLD_VERSION/,\$d" CHANGELOG.md)