diff --git a/release.sh b/release.sh
index 18af843..f4a3614 100755
--- a/release.sh
+++ b/release.sh
@@ -38,4 +38,4 @@ notes=`pandoc --from markdown --to markdown --wrap none CHANGELOG.md | \
 gh release create v$version --title v$version --notes "$notes"
 
 # create the Hackage release candidate
-stack upload --test-tarball --candidate .
+stack upload --test-tarball --candidate --pvp-bounds upper .