diff --git a/sevenwire-rubocop.gemspec b/sevenwire-rubocop.gemspec
index 118c685..e4b9d0b 100644
--- a/sevenwire-rubocop.gemspec
+++ b/sevenwire-rubocop.gemspec
@@ -24,6 +24,6 @@ Gem::Specification.new do |spec|
 
   spec.add_dependency "rubocop", "~> 0.62.0"
   spec.add_dependency "rubocop-rspec", "~> 1.31.0"
-  spec.add_development_dependency "bundler", "~> 1.15"
+  spec.add_development_dependency "bundler", "~> 2.1"
   spec.add_development_dependency "rake", "~> 12.3"
 end