diff --git a/simplecov-json.gemspec b/simplecov-json.gemspec
index 4230bd3..0cbb92e 100644
--- a/simplecov-json.gemspec
+++ b/simplecov-json.gemspec
@@ -18,7 +18,5 @@ Gem::Specification.new do |s|
   s.require_paths = ["lib"]
 
   s.add_dependency "simplecov"
-  s.add_dependency "json"
-
   s.add_development_dependency "rake"
 end