diff --git a/jqtree-rails.gemspec b/jqtree-rails.gemspec
index 2819b46..2ffbb74 100644
--- a/jqtree-rails.gemspec
+++ b/jqtree-rails.gemspec
@@ -15,6 +15,6 @@ Gem::Specification.new do |s|
 
   s.files       = `git ls-files`.split("\n")
 
-  s.add_dependency 'railties', '>= 3.2.0', '< 5.0'
+  s.add_dependency 'railties', '>= 3.2.0', '< 6.1'
   s.add_dependency 'thor',     '~> 0.14'
 end