diff --git a/test/tests/ruby-bundler/container.sh b/test/tests/ruby-bundler/container.sh
index 8d954b769c6aa..9fd851695eee9 100644
--- a/test/tests/ruby-bundler/container.sh
+++ b/test/tests/ruby-bundler/container.sh
@@ -13,5 +13,5 @@ cp Gemfile.lock Gemfile.lock.orig
 BUNDLE_FROZEN=1 bundle install
 diff -u Gemfile.lock.orig Gemfile.lock >&2
 
-bundle install --deployment
+BUNDLE_DEPLOYMENT=1 bundle install
 diff -u Gemfile.lock.orig Gemfile.lock >&2