arx.gemspec in arx-1.0.1 vs arx.gemspec in arx-1.1.0

@@ -19,10 +19,10 @@
   spec.required_ruby_version = '~> 2.5'
 
   spec.add_runtime_dependency 'nokogiri', '~> 1.10'
   spec.add_runtime_dependency 'nokogiri-happymapper', '~> 0.8'
 
-  spec.add_development_dependency 'bundler', '~> 2.0'
+  spec.add_development_dependency 'bundler', '>= 1.17'
   spec.add_development_dependency 'rake', '~> 12.3'
   spec.add_development_dependency 'thor', '~> 0.19.4'
   spec.add_development_dependency 'rspec', '~> 3.7'
   spec.add_development_dependency 'coveralls', '0.8.22'
 
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