pairing_matrix.gemspec in pairing_matrix-2.1.1 vs pairing_matrix.gemspec in pairing_matrix-2.2

@@ -20,6 +20,7 @@
 
   spec.add_development_dependency   'bundler', '~> 1.6'
   spec.add_dependency               'sinatra', '~> 1.4.8'
   spec.add_dependency               'octokit', '~> 4.6.2'
   spec.add_dependency               'eldritch', '~> 1.1.2'
+  spec.add_dependency               'puma', '~> 3.11.2'
 end