diff --git a/json_logic.gemspec b/json_logic.gemspec
index 329c0cc..0b60e28 100644
--- a/json_logic.gemspec
+++ b/json_logic.gemspec
@@ -20,7 +20,7 @@ Gem::Specification.new do |spec|
 
   spec.required_ruby_version = '>= 2.2'
 
-  spec.add_development_dependency 'bundler',  '~> 1.13'
+  spec.add_development_dependency 'bundler',  '~> 2.0.1'
   spec.add_development_dependency 'rake',     '~> 10.0'
   spec.add_development_dependency 'minitest', '~> 5.0'
   spec.add_development_dependency 'byebug'