diff --git a/jhipster/jhipster-microservice/gateway-app/src/main/webapp/bower_components/bootstrap/Gemfile b/jhipster/jhipster-microservice/gateway-app/src/main/webapp/bower_components/bootstrap/Gemfile
index feb162291c38..7a5c71e7b5f1 100644
--- a/jhipster/jhipster-microservice/gateway-app/src/main/webapp/bower_components/bootstrap/Gemfile
+++ b/jhipster/jhipster-microservice/gateway-app/src/main/webapp/bower_components/bootstrap/Gemfile
@@ -1,6 +1,6 @@
 source 'https://rubygems.org'
 
 group :development, :test do
-  gem 'jekyll', '~> 3.1.2'
+  gem 'jekyll', '~> 3.9.0'
   gem 'jekyll-sitemap', '~> 0.11.0'
 end