ladder_drive.gemspec in ladder_drive-0.3.1 vs ladder_drive.gemspec in ladder_drive-0.4.0

@@ -12,11 +12,11 @@
   spec.summary       = %q{The ladder_drive is a simple abstract ladder for PLC (Programmable Logic Controller). Formerly known as 'escalator'.}
   spec.description   = %q{We aim to design abstraction ladder which is able to run on any PLC with same ladder source or binary and prepare full stack tools.}
   spec.homepage      = "https://github.com/ito-soft-design/ladder_drive"
   spec.license       = "MIT"
 
-  spec.add_dependency "thor"
-  spec.add_runtime_dependency "activesupport", ">=4.2.7"
+  spec.add_runtime_dependency 'thor', '~> 0'
+  spec.add_runtime_dependency 'activesupport', '~> 4.2', '>= 4.2.7'
 
   spec.files         = `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]