diff --git a/rspec-core/Gemfile b/rspec-core/Gemfile
index 9db8ae481..cc527c1b5 100644
--- a/rspec-core/Gemfile
+++ b/rspec-core/Gemfile
@@ -36,6 +36,8 @@ end
 
 if RUBY_VERSION < '2.0.0' || RUBY_ENGINE == 'java'
   gem 'json', '< 2.0.0'
+else
+  gem 'json', '> 2.3.0'
 end
 
 if RUBY_VERSION < '2.2.0' && !!(RbConfig::CONFIG['host_os'] =~ /cygwin|mswin|mingw|bccwin|wince|emx/)