diff --git a/Gemfile b/Gemfile
index 2befa94a..4add8869 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,7 +5,7 @@
 source :gemcutter
 
 
-gem "minitest", "~>4.3.3", :group => [:development, :test]
+gem "minitest", "~>4.6.2", :group => [:development, :test]
 gem "hoe", "~>3.3.1", :group => [:development, :test]
 
 # vim: syntax=ruby
diff --git a/arel.gemspec b/arel.gemspec
index 8088e1e4..1d254425 100644
--- a/arel.gemspec
+++ b/arel.gemspec
@@ -24,16 +24,16 @@ Gem::Specification.new do |s|
 
     if Gem::Version.new(Gem::VERSION) >= Gem::Version.new('1.2.0') then
       s.add_development_dependency(%q<minitest>, ["~> 4.6"])
-      s.add_development_dependency(%q<rdoc>, ["~> 3.10"])
+      s.add_development_dependency(%q<rdoc>, ["~> 4.0"])
       s.add_development_dependency(%q<hoe>, ["~> 3.5"])
     else
       s.add_dependency(%q<minitest>, ["~> 4.6"])
-      s.add_dependency(%q<rdoc>, ["~> 3.10"])
+      s.add_dependency(%q<rdoc>, ["~> 4.0"])
       s.add_dependency(%q<hoe>, ["~> 3.5"])
     end
   else
     s.add_dependency(%q<minitest>, ["~> 4.6"])
-    s.add_dependency(%q<rdoc>, ["~> 3.10"])
+    s.add_dependency(%q<rdoc>, ["~> 4.0"])
     s.add_dependency(%q<hoe>, ["~> 3.5"])
   end
 end