omniauth-g5.gemspec in omniauth-g5-0.3.0 vs omniauth-g5.gemspec in omniauth-g5-0.3.1

@@ -15,10 +15,11 @@
   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_dependency('omniauth-oauth2', '~> 1.1')
+  # Pinning version to 1.3.1 since 1.4.0 removes the `callback_url` method required for our oauth workflow
+  gem.add_dependency('omniauth-oauth2', '= 1.3.1')
 
   gem.add_development_dependency('rspec', '~> 3.2')
   gem.add_development_dependency('rspec-its')
   gem.add_development_dependency('simplecov', '~> 0.7')
   gem.add_development_dependency('codeclimate-test-reporter')