tracker_api.gemspec in tracker_api-1.9.1 vs tracker_api.gemspec in tracker_api-1.10.0

@@ -16,10 +16,10 @@
   spec.files         = `git ls-files`.split($/)
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ['lib']
 
-  spec.add_development_dependency 'bundler', '~> 1.3'
+  spec.add_development_dependency 'bundler', '> 1.3', '< 2.1'
   spec.add_development_dependency 'rake'
   spec.add_development_dependency 'minitest'
   spec.add_development_dependency 'mocha'
   spec.add_development_dependency 'awesome_print'
   spec.add_development_dependency 'vcr'