diff --git a/ruby_fs.gemspec b/ruby_fs.gemspec
index bc873e7..557e1c9 100644
--- a/ruby_fs.gemspec
+++ b/ruby_fs.gemspec
@@ -19,7 +19,6 @@ Gem::Specification.new do |s|
   s.require_paths = ["lib"]
 
   s.add_runtime_dependency %q<celluloid-io>, ["~> 0.13"]
-  s.add_runtime_dependency %q<json>
 
   s.add_development_dependency %q<bundler>, ["~> 1.0"]
   s.add_development_dependency %q<rspec>, ["~> 2.5"]