awskeyring.gemspec in awskeyring-1.5.0 vs awskeyring.gemspec in awskeyring-1.6.0

@@ -18,9 +18,11 @@
   spec.files         = `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^spec/|^\..*|^.*\.png}) }
   spec.bindir        = 'exe'
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ['lib']
 
+  spec.required_ruby_version = '>= 2.6.0'
+
   spec.metadata = {
     'bug_tracker_uri' => "#{Awskeyring::HOMEPAGE}/issues",
     'changelog_uri' => "#{Awskeyring::HOMEPAGE}/blob/master/CHANGELOG.md",
     'documentation_uri' => "https://rubydoc.info/gems/#{spec.name}/#{Awskeyring::VERSION}",
     'source_code_uri' => "#{Awskeyring::HOMEPAGE}/tree/v#{Awskeyring::VERSION}",