diff --git a/git-contributors.gemspec b/git-contributors.gemspec
index ca4151c..9f0a380 100644
--- a/git-contributors.gemspec
+++ b/git-contributors.gemspec
@@ -26,5 +26,5 @@ Gem::Specification.new do |spec|
   spec.add_dependency 'git-issues', '~> 0'
   spec.add_dependency 'rest-client', '~> 1'
   spec.add_dependency 'zlog', '~> 0'
-  spec.add_dependency 'json', '~> 1.8'
+  spec.add_dependency 'json', '~> 2.3'
 end