MESH.gemspec in mesh-medical-subject-headings-1.2.1 vs MESH.gemspec in mesh-medical-subject-headings-1.2.2

@@ -21,6 +21,7 @@
   spec.add_development_dependency "bundler", "~> 1.3"
   spec.add_development_dependency "rake"
   spec.add_development_dependency "mocha"
   spec.add_development_dependency "yard"
   spec.add_development_dependency "minitest", "~> 5.0.8"
+  spec.add_development_dependency "ruby-prof"
 end