diff --git a/Dockerfile b/Dockerfile
index 34a3816..dfc0349 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -14,6 +14,7 @@ COPY Gemfile* *.gemspec /srv/ontoportal/ncbo_cron/
 
 WORKDIR /srv/ontoportal/ncbo_cron
 
+RUN gem update --system
 RUN gem install bundler
 ENV BUNDLE_PATH=/srv/ontoportal/bundle
 RUN bundle install