diff --git a/Gemfile.lock b/Gemfile.lock
index 29c0fcdd88..618733d059 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -55,7 +55,7 @@ PATH
       activemodel (= 5.0.4)
       activerecord (= 5.0.4)
       activesupport (= 5.0.4)
-      bundler (>= 1.3.0, < 2.0)
+      bundler (>= 1.3.0)
       railties (= 5.0.4)
       sprockets-rails (>= 2.0.0)
     railties (5.0.4)
diff --git a/rails.gemspec b/rails.gemspec
index 8f9cc181a0..035fb0574d 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