diff --git a/sdoc.gemspec b/sdoc.gemspec
index 45b2d54..19ffaf7 100644
--- a/sdoc.gemspec
+++ b/sdoc.gemspec
@@ -26,20 +26,20 @@ Gem::Specification.new do |s|
 
     if Gem::Version.new(Gem::VERSION) >= Gem::Version.new('1.2.0') then
       s.add_runtime_dependency(%q<rdoc>, ["< 5.0", "~> 4.0"])
-      s.add_runtime_dependency(%q<json>, ["~> 1.8"])
+      s.add_runtime_dependency(%q<json>, [">= 1.7.7"])
       s.add_development_dependency(%q<bundler>, ["~> 1.3"])
       s.add_development_dependency(%q<rake>, [">= 0"])
       s.add_development_dependency(%q<minitest>, ["~> 4.0"])
     else
       s.add_dependency(%q<rdoc>, ["< 5.0", "~> 4.0"])
-      s.add_dependency(%q<json>, ["~> 1.8"])
+      s.add_dependency(%q<json>, [">= 1.7.7"])
       s.add_dependency(%q<bundler>, ["~> 1.3"])
       s.add_dependency(%q<rake>, [">= 0"])
       s.add_dependency(%q<minitest>, ["~> 4.0"])
     end
   else
     s.add_dependency(%q<rdoc>, ["< 5.0", "~> 4.0"])
-    s.add_dependency(%q<json>, ["~> 1.8"])
+    s.add_dependency(%q<json>, [">= 1.7.7"])
     s.add_dependency(%q<bundler>, ["~> 1.3"])
     s.add_dependency(%q<rake>, [">= 0"])
     s.add_dependency(%q<minitest>, ["~> 4.0"])