diff --git a/Gemfile b/Gemfile
index cb5646561..43fc63d43 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,8 +1,6 @@
 source 'https://rubygems.org'
 
-if Gem::Version.new(Bundler::VERSION) < Gem::Version.new('1.5.0')
-  abort "Redmine requires Bundler 1.5.0 or higher (you're using #{Bundler::VERSION}).\nPlease update with 'gem update bundler'."
-end
+gem "bundler", ">= 1.5.0", "< 2.0.0"
 
 gem "rails", "4.2.11"
 gem "addressable", "2.4.0" if RUBY_VERSION < "2.0"