activefedora-aggregation.gemspec in activefedora-aggregation-0.2.0 vs activefedora-aggregation.gemspec in activefedora-aggregation-0.2.1

@@ -16,10 +16,10 @@
   spec.files         = `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   spec.require_paths = ["lib"]
 
   spec.add_dependency 'activesupport'
   spec.add_dependency 'active-fedora'
-  spec.add_dependency 'rdf-vocab'
+  spec.add_dependency 'rdf-vocab', '~> 0.8.1'
 
   spec.add_development_dependency "bundler", "~> 1.8"
   spec.add_development_dependency "rake", "~> 10.0"
   spec.add_development_dependency "rspec", "~> 3.2"
   spec.add_development_dependency "jettywrapper"