yoti.gemspec in yoti-1.6.3 vs yoti.gemspec in yoti-1.6.4

@@ -21,12 +21,10 @@
   spec.files         = `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features|examples)/|^sonar-project.properties$|^.dependabot/config.yml$|^.travis.yml$}) }
   spec.require_paths = ['lib']
 
   spec.required_ruby_version = '>= 2.4'
 
-  spec.add_dependency 'activesupport', '~> 5.0' # Pin activesupport library to 5.x for Ruby 2.4 support
-  spec.add_dependency 'google-protobuf', '~> 3.7', '>= 3.7.0'
-  spec.add_dependency 'protobuf', '~> 3.6'
+  spec.add_dependency 'google-protobuf', '~> 3.7'
 
   spec.add_development_dependency 'bundler', '~> 2.0'
   spec.add_development_dependency 'coveralls', '~> 0.8'
   spec.add_development_dependency 'dotenv', '~> 2.2'
   spec.add_development_dependency 'generator_spec', '~> 0.9'