font-awesome-middleman.gemspec in font-awesome-middleman-4.2.1 vs font-awesome-middleman.gemspec in font-awesome-middleman-4.2.2

@@ -15,10 +15,10 @@
   gem.files         = `git ls-files`.split($/)
   gem.executables   = gem.files.grep(%r{^bin/}).map{ |f| File.basename(f) }
   gem.test_files    = gem.files.grep(%r{^(test|spec|features)/})
   gem.require_paths = ["lib"]
 
-  gem.add_runtime_dependency(%q<middleman-core>, [">= 3.0.0"])
+  gem.add_runtime_dependency(%q<middleman-core>, ["~> 3.0.0"])
 
   gem.add_development_dependency(%q<bundler>,    ["~> 1.1"])
   gem.add_development_dependency(%q<rspec>,      ["~> 2.6.0"])
 end