discoverer.gemspec in discoverer-0.0.2 vs discoverer.gemspec in discoverer-0.0.3

@@ -6,10 +6,10 @@
   gem.email         = ["[e-mail]"]
   gem.description   = %q{Discoverer functionality with focus in writers and readers}
   gem.summary       = %q{Discoverer functionality with focus in writers and readers}
   gem.homepage      = ""
 
-  gem.add_dependency 'virtus'
+  gem.add_dependency 'virtus', '~> 1.0'
 
   gem.add_development_dependency 'rspec'
   gem.add_development_dependency 'pry'
 
   gem.files         = `git ls-files`.split($\)