Index: Gemfile
===================================================================
--- Gemfile	(revision 17463)
+++ Gemfile	(working copy)
@@ -4,7 +4,7 @@
   abort "Redmine requires Bundler 1.5.0 or higher (you're using #{Bundler::VERSION}).\nPlease update with 'gem update bundler'."
 end
 
-gem "rails", "5.2.0"
+gem "rails", "5.2.1"
 gem "coderay", "~> 1.1.1"
 gem "request_store", "1.0.5"
 gem "mime-types", "~> 3.0"