opal-haml.gemspec in opal-haml-0.2.0 vs opal-haml.gemspec in opal-haml-0.3.0

@@ -18,8 +18,8 @@
   s.require_paths  = ['lib']
 
   s.add_dependency 'opal', ['>= 0.5.0', '< 1.0.0']
   s.add_dependency 'haml'
 
-  s.add_development_dependency 'opal-rspec', '>= 0.2.1'
+  s.add_development_dependency 'opal-rspec', '~> 0.4.0'
   s.add_development_dependency 'rake'
 end