diff --git a/unleash-client.gemspec b/unleash-client.gemspec
index 4cd0c04c..6fc39de3 100644
--- a/unleash-client.gemspec
+++ b/unleash-client.gemspec
@@ -27,7 +27,7 @@ Gem::Specification.new do |spec|
   spec.add_dependency "murmurhash3", "~> 0.1.6"
 
   spec.add_development_dependency "awesome_print"
-  spec.add_development_dependency "bundler", "~> 1.16"
+  spec.add_development_dependency "bundler", "~> 2.0"
   spec.add_development_dependency "rake", "~> 10.0"
   spec.add_development_dependency "rspec", "~> 3.0"
   spec.add_development_dependency "webmock", "~> 3.0"