diff --git a/tools/ci/setup.sh b/tools/ci/setup.sh
index cc706ed61..37d96f325 100755
--- a/tools/ci/setup.sh
+++ b/tools/ci/setup.sh
@@ -2,5 +2,5 @@
 
 set -e
 
-brew install chibi-scheme gauche guile uutils-coreutils parallel
+brew install chibi-scheme gauche guile parallel uutils-coreutils uutils-findutils
 cargo install stak
diff --git a/tools/integration_test.sh b/tools/integration_test.sh
index 77c782fc5..a493c3004 100755
--- a/tools/integration_test.sh
+++ b/tools/integration_test.sh
@@ -35,7 +35,7 @@ export STAK_ROOT=$PWD
 export PATH=$PWD/tools/scheme/$interpreter:$PATH
 
 if [ $# -eq 0 ]; then
-  git ls-files '**/*.feature' | parallel -q tools/cucumber.sh ${tags:+-t "$tags"}
+  git ls-files '**/*.feature' | xargs ls -S | parallel -q tools/cucumber.sh ${tags:+-t "$tags"}
 else
   bundler exec cucumber --publish-quiet --strict-undefined "$@"
 fi