diff --git a/middleman-x86-mingw32.gemspec b/middleman-x86-mingw32.gemspec
index 04440137..686e1893 100644
--- a/middleman-x86-mingw32.gemspec
+++ b/middleman-x86-mingw32.gemspec
@@ -45,7 +45,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency("coffee-filter", ["~> 0.1.1"])
   s.add_development_dependency("liquid", ["~> 2.2"])
   s.add_development_dependency("cucumber", ["~> 1.1.0"])
-  s.add_development_dependency("aruba")
+  s.add_development_dependency("aruba", ["0.4.9"])
   s.add_development_dependency("rake", ["~> 0.9.2"])
   s.add_development_dependency("rspec", ["~> 2.7"])
   s.add_development_dependency("rdoc", ["~> 3.9"])
diff --git a/middleman.gemspec b/middleman.gemspec
index edb108f6..d105220d 100644
--- a/middleman.gemspec
+++ b/middleman.gemspec
@@ -31,7 +31,7 @@ Gem::Specification.new do |s|
   s.add_dependency("compass", ["~> 0.11.3"])
   s.add_dependency("coffee-script", ["~> 2.2.0"])
   s.add_dependency("execjs", ["~> 1.2.7"])
-  s.add_dependency("sprockets", ["~> 2.1.2"])
+  s.add_dependency("sprockets", ["~> 2.0"])
   s.add_dependency("sprockets-sass", ["~> 0.6.0"])
   s.add_dependency("guard", ["~> 0.9.2"])
   s.add_dependency("redcarpet", ["~> 2.0.0"])
@@ -42,7 +42,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency("coffee-filter", ["~> 0.1.1"])
   s.add_development_dependency("liquid", ["~> 2.2"])
   s.add_development_dependency("cucumber", ["~> 1.1.0"])
-  s.add_development_dependency("aruba")
+  s.add_development_dependency("aruba", ["0.4.9"])
   s.add_development_dependency("rake", ["~> 0.9.2"])
   s.add_development_dependency("rspec", ["~> 2.7"])
   s.add_development_dependency("rdoc", ["~> 3.9"])