diff --git a/rails.gemspec b/rails.gemspec
index 91316f089f..1dbd86d2fb 100644
--- a/rails.gemspec
+++ b/rails.gemspec
@@ -28,6 +28,6 @@ Gem::Specification.new do |s|
   s.add_dependency "actioncable",   version
   s.add_dependency "railties",      version
 
-  s.add_dependency "bundler",         ">= 1.3.0", "< 2.0"
+  s.add_dependency "bundler",         ">= 1.3.0"
   s.add_dependency "sprockets-rails", ">= 2.0.0"
 end