tomograph.gemspec in tomograph-3.0.1 vs tomograph.gemspec in tomograph-3.1.0

@@ -22,7 +22,8 @@
   spec.add_development_dependency 'byebug', '~> 11.1', '>= 11.1.1'
   spec.add_development_dependency 'rake', '>= 13.0.1'
   spec.add_development_dependency 'rspec', '~> 3.9', '>= 3.9.0'
   spec.add_development_dependency 'rubocop', '~> 0.81', '>= 0.81.0'
   spec.add_development_dependency 'simplecov', '~> 0.18', '>= 0.18.5'
+  spec.add_development_dependency 'json-schema', '~> 2.8', '>= 2.8.1'
   spec.required_ruby_version = '>= 2.4.0'
 end