learn-open.gemspec in learn-open-1.2.20 vs learn-open.gemspec in learn-open-1.2.21

@@ -16,10 +16,16 @@
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ["lib", "bin"]
 
   spec.add_development_dependency "bundler", "~> 1.7"
-  spec.add_development_dependency "rake", "~> 10.0"
+  spec.add_development_dependency "rake",    "~> 10.0"
+  spec.add_development_dependency "fakefs",  "~> 0.14.2"
+  spec.add_development_dependency "pry",     "~> 0.11.1"
+  spec.add_development_dependency "rspec-core","~> 3.7.1"
+  spec.add_development_dependency "rspec-mocks","~> 3.7.0"
+  spec.add_development_dependency "diff-lcs", "~> 1.3"
+  spec.add_development_dependency "guard-rspec", "~> 4.7.0"
 
   spec.add_runtime_dependency "netrc"
   spec.add_runtime_dependency "git"
   spec.add_runtime_dependency "learn-web", ">= 1.5.0"
 end