diff --git a/Gemfile.lock b/Gemfile.lock
index c8e8c42..21d8fbc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -10,7 +10,6 @@ GEM
     gem_plugin (0.2.3)
     hoe (3.4.0)
       rake (>= 0.8, < 11.0)
-    json (1.7.6)
     mechanize (2.5.1)
       domain_name (~> 0.5, >= 0.5.1)
       mime-types (~> 1.17, >= 1.17.2)
@@ -28,8 +27,7 @@ GEM
     nokogiri (1.5.6)
     ntlm-http (0.1.1)
     rake (10.0.3)
-    rdoc (3.12)
-      json (~> 1.4)
+    rdoc (6.3.1)
     redgreen (1.2.2)
     rspec (2.12.0)
       rspec-core (~> 2.12.0)
diff --git a/impostor.gemspec b/impostor.gemspec
index 942fc8e..4cac998 100644
--- a/impostor.gemspec
+++ b/impostor.gemspec
@@ -24,19 +24,19 @@ Gem::Specification.new do |s|
     if Gem::Version.new(Gem::VERSION) >= Gem::Version.new('1.2.0') then
       s.add_runtime_dependency(%q<nokogiri>, ["~> 1.4.0"])
       s.add_runtime_dependency(%q<mechanize>, ["~> 2.5.0"])
-      s.add_development_dependency(%q<rdoc>, ["~> 3.10"])
+      s.add_development_dependency(%q<rdoc>, "~> 6.3")
       s.add_development_dependency(%q<hoe>, ["~> 2.14"])
       s.add_development_dependency(%q<vcr>)
     else
       s.add_dependency(%q<nokogiri>, ["~> 1.4.0"])
       s.add_dependency(%q<mechanize>, ["~> 2.5.0"])
-      s.add_dependency(%q<rdoc>, ["~> 3.10"])
+      s.add_dependency(%q<rdoc>, "~> 6.3")
       s.add_dependency(%q<hoe>, ["~> 2.14"])
     end
   else
     s.add_dependency(%q<nokogiri>, ["~> 1.4.0"])
     s.add_dependency(%q<mechanize>, ["~> 2.5.0"])
-    s.add_dependency(%q<rdoc>, ["~> 3.10"])
+    s.add_dependency(%q<rdoc>, "~> 6.3")
     s.add_dependency(%q<hoe>, ["~> 2.14"])
   end
 end