easypost.gemspec in easypost-4.1.2 vs easypost.gemspec in easypost-4.2.0

@@ -22,12 +22,12 @@
   spec.required_ruby_version = '>= 2.5'
 
   spec.add_development_dependency 'pry', '~> 0.14'
   spec.add_development_dependency 'rake', '~> 13.0'
   spec.add_development_dependency 'rspec', '~> 3.10'
-  spec.add_development_dependency 'rubocop', '~> 1.24'
+  spec.add_development_dependency 'rubocop', '= 1.27' # rubocop 1.28 requires Ruby 2.6+
   spec.add_development_dependency 'rubocop-rspec', '~> 2.7'
   spec.add_development_dependency 'simplecov', '~> 0.21'
   spec.add_development_dependency 'simplecov-lcov', '~> 0.8'
-  spec.add_development_dependency 'vcr', '~> 6.0'
+  spec.add_development_dependency 'vcr', '= 6.0' # VCR 6.1 requires Ruby 2.6+
   spec.add_development_dependency 'webmock', '~> 3.14'
 end