todoist.gemspec in todoist-ruby-0.2.3 vs todoist.gemspec in todoist-ruby-0.2.4

@@ -28,12 +28,12 @@
   end
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
 
-  spec.add_development_dependency "bundler", "~> 2.0.1"
-  spec.add_development_dependency "rake", "~> 10.0"
-  spec.add_development_dependency "rspec", "~> 3.0"
+  spec.add_development_dependency "bundler", "~>  2.1.4"
+  spec.add_development_dependency "rake", "~> 12.3.3"
+  spec.add_development_dependency "rspec", "~>3.9"
   spec.add_development_dependency "pry", "~> 0.10"
   spec.add_development_dependency "vcr", "~> 3.0"
   spec.add_development_dependency "webmock", "~> 3.0"
   spec.add_development_dependency "simplecov", "~> 0.10"
   spec.add_dependency "concurrent-ruby", "~> 1.0"