diff --git a/play-with-docker/Portus/Gemfile b/play-with-docker/Portus/Gemfile
index e23be3343..a00890e4e 100644
--- a/play-with-docker/Portus/Gemfile
+++ b/play-with-docker/Portus/Gemfile
@@ -1,6 +1,6 @@
 source "https://rubygems.org"
 
-gem "rails", "~> 4.2.8"
+gem "rails", "~> 4.2.11", ">= 4.2.11.3"
 gem "sass-rails", ">= 3.2"
 gem "bootstrap-sass", "~> 3.3.4"
 gem "slim"