diff --git a/lib/psenv/version.rb b/lib/psenv/version.rb
index 393d3eb..cb9634f 100644
--- a/lib/psenv/version.rb
+++ b/lib/psenv/version.rb
@@ -1,3 +1,3 @@
 module Psenv
-  VERSION = "0.4.0".freeze
+  VERSION = "0.6.0".freeze
 end
diff --git a/psenv-rails.gemspec b/psenv-rails.gemspec
index dbe9bba..745f2ec 100644
--- a/psenv-rails.gemspec
+++ b/psenv-rails.gemspec
@@ -23,5 +23,5 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
 
   spec.add_dependency "psenv", Psenv::VERSION
-  spec.add_dependency "railties", ">= 3.2", "< 5.3"
+  spec.add_dependency "railties", ">= 3.2", "<= 6.1"
 end