diff --git a/tools/run_tests/build_artifact_ruby.sh b/tools/run_tests/build_artifact_ruby.sh
index 10fc997a836..f7504a9614a 100755
--- a/tools/run_tests/build_artifact_ruby.sh
+++ b/tools/run_tests/build_artifact_ruby.sh
@@ -55,7 +55,7 @@ if [ "$SYSTEM" == "Darwin" ] ; then
 fi
 
 set +ex
-gem install bundle --update
+gem install bundler --update
 bundle install
 set -ex