flatpickr.gemspec in flatpickr-4.5.7.0 vs flatpickr.gemspec in flatpickr-4.6.3.0

@@ -18,9 +18,9 @@
   end
   spec.bindir        = 'exe'
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ['lib']
 
-  spec.add_development_dependency 'bundler', '~> 1.13'
-  spec.add_development_dependency 'rake', '~> 10.0'
+  spec.add_development_dependency 'bundler', '~> 2.0'
+  spec.add_development_dependency 'rake', '~> 13.0'
   spec.add_development_dependency 'rspec', '~> 3.0'
 end