diff --git a/Gemfile b/Gemfile
index 42acf7e..b386249 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,7 +10,7 @@ gem "rake", "~> 12.3.3"
 # Include everything needed to run rake, tests, features, etc.
 group :development do
   gem "rspec", "~> 2.14.1"
-  gem "rdoc", "~> 4.1.1"
+  gem "rdoc", "~> 6.1.2"
   gem "bundler", "~> 1.0"
   gem "jeweler", "~> 2.0.1"
   gem "simplecov", "~> 0.8.1"
diff --git a/Gemfile.lock b/Gemfile.lock
index 6bdd469..033a176 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -29,7 +29,6 @@ GEM
       nokogiri (>= 1.5.10)
       rake
       rdoc
-    json (1.8.1)
     jwt (2.2.1)
     mini_portile2 (2.4.0)
     multi_json (1.14.1)
@@ -48,8 +47,7 @@ GEM
     rack (2.2.3.1)
     rake (12.3.3)
     rchardet (1.8.0)
-    rdoc (4.1.1)
-      json (~> 1.4)
+    rdoc (6.1.2.1)
     rspec (2.14.1)
       rspec-core (~> 2.14.0)
       rspec-expectations (~> 2.14.0)
@@ -74,7 +72,7 @@ DEPENDENCIES
   jeweler (~> 2.0.1)
   mysql
   rake (~> 12.3.3)
-  rdoc (~> 4.1.1)
+  rdoc (~> 6.1.2)
   rspec (~> 2.14.1)
   sequel (~> 4.10.0)
   simplecov (~> 0.8.1)
diff --git a/cando.gemspec b/cando.gemspec
index f34e34a..72f31d3 100644
--- a/cando.gemspec
+++ b/cando.gemspec
@@ -49,7 +49,7 @@ Gem::Specification.new do |s|
       s.add_runtime_dependency(%q<sequel>, ["~> 4.10.0"])
       s.add_runtime_dependency(%q<rake>, ">= 10.3.2", "< 13.1.0")
       s.add_development_dependency(%q<rspec>, ["~> 2.14.1"])
-      s.add_development_dependency(%q<rdoc>, ["~> 4.1.1"])
+      s.add_development_dependency(%q<rdoc>, "~> 6.1.2")
       s.add_development_dependency(%q<bundler>, ["~> 1.0"])
       s.add_development_dependency(%q<jeweler>, ["~> 2.0.1"])
       s.add_development_dependency(%q<simplecov>, ["~> 0.8.1"])
@@ -57,7 +57,7 @@ Gem::Specification.new do |s|
       s.add_dependency(%q<sequel>, ["~> 4.10.0"])
       s.add_dependency(%q<rake>, ">= 10.3.2", "< 13.1.0")
       s.add_dependency(%q<rspec>, ["~> 2.14.1"])
-      s.add_dependency(%q<rdoc>, ["~> 4.1.1"])
+      s.add_dependency(%q<rdoc>, "~> 6.1.2")
       s.add_dependency(%q<bundler>, ["~> 1.0"])
       s.add_dependency(%q<jeweler>, ["~> 2.0.1"])
       s.add_dependency(%q<simplecov>, ["~> 0.8.1"])
@@ -66,7 +66,7 @@ Gem::Specification.new do |s|
     s.add_dependency(%q<sequel>, ["~> 4.10.0"])
     s.add_dependency(%q<rake>, ">= 10.3.2", "< 13.1.0")
     s.add_dependency(%q<rspec>, ["~> 2.14.1"])
-    s.add_dependency(%q<rdoc>, ["~> 4.1.1"])
+    s.add_dependency(%q<rdoc>, "~> 6.1.2")
     s.add_dependency(%q<bundler>, ["~> 1.0"])
     s.add_dependency(%q<jeweler>, ["~> 2.0.1"])
     s.add_dependency(%q<simplecov>, ["~> 0.8.1"])