mfd.gemspec in mfd-0.2.0 vs mfd.gemspec in mfd-0.2.1

@@ -22,10 +22,10 @@
   end
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
 
-  spec.add_development_dependency "bundler", "~> 1.17"
-  spec.add_development_dependency "rake", "~> 10.0"
-  spec.add_development_dependency "rspec", "~> 3.0"
+  spec.add_development_dependency "bundler", ">= 1.17"
+  spec.add_development_dependency "rake", ">= 10.0"
+  spec.add_development_dependency "rspec", ">= 3.0"
   spec.add_development_dependency "pry-byebug", ">= 3.6.0"
 end