diff --git a/sensu-plugins-graylog.gemspec b/sensu-plugins-graylog.gemspec
index 409a05e..a57c72f 100644
--- a/sensu-plugins-graylog.gemspec
+++ b/sensu-plugins-graylog.gemspec
@@ -30,7 +30,7 @@ Gem::Specification.new do |s|
   s.add_runtime_dependency 'sensu-plugin',   '~> 1.2'
   s.add_runtime_dependency 'rest-client',    '2.0.2'
 
-  s.add_development_dependency 'bundler',                   '~> 1.7'
+  s.add_development_dependency 'bundler',                   '~> 2.0'
   s.add_development_dependency 'codeclimate-test-reporter', '~> 0.4'
   s.add_development_dependency 'github-markup',             '~> 3.0'
   s.add_development_dependency 'pry',                       '~> 0.10'