diff --git a/concourse/images/bundle-install.step b/concourse/images/bundle-install.step
index b0e3f70325..70c1cf4e6b 100644
--- a/concourse/images/bundle-install.step
+++ b/concourse/images/bundle-install.step
@@ -1,5 +1,7 @@
 # -*- dockerfile -*-
 
 COPY Gemfile      nokogiri/
+COPY Gemfile.lock nokogiri/
 
+RUN gem install bundler
 RUN cd nokogiri && bundle install