diff --git a/Gemfile b/Gemfile
index 6160f94..488fc27 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,16 +3,16 @@ source "http://rubygems.org"
 group :development do
   gem 'rake'
   gem 'rack'
-  gem 'jekyll'
+  gem 'jekyll', '~> 0.11'
   gem 'rdiscount'
   gem 'pygments.rb'
   gem 'RedCloth'
-  gem 'haml', '>= 3.1'
-  gem 'compass', '>= 0.11'
+  gem 'haml', '~> 3.1'
+  gem 'compass', '~> 0.12'
   gem 'rubypants'
-  gem 'rb-fsevent'
+  gem 'rb-fsevent', '~> 0.9'
   gem 'stringex'
-  gem 'liquid', '2.2.2'
+  gem 'liquid', '~> 2.3'
 end
 
-gem 'sinatra', '1.2.6'
+gem 'sinatra', '~> 1.3'
diff --git a/Gemfile.lock b/Gemfile.lock
index 9e88ce0..08665b7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -17,21 +17,23 @@ GEM
     ffi (1.0.11)
     fssm (0.2.9)
     haml (3.1.6)
-    jekyll (0.11.0)
-      albino (>= 1.3.2)
-      classifier (>= 1.3.1)
-      directory_watcher (>= 1.1.1)
-      kramdown (>= 0.13.2)
-      liquid (>= 1.9.0)
-      maruku (>= 0.5.9)
+    jekyll (0.11.2)
+      albino (~> 1.3)
+      classifier (~> 1.3)
+      directory_watcher (~> 1.1)
+      kramdown (~> 0.13)
+      liquid (~> 2.3)
+      maruku (~> 0.5)
     kramdown (0.13.6)
-    liquid (2.2.2)
+    liquid (2.3.0)
     maruku (0.6.0)
       syntax (>= 1.0.0)
     posix-spawn (0.3.6)
     pygments.rb (0.2.12)
       rubypython (~> 0.5.3)
     rack (1.4.1)
+    rack-protection (1.2.0)
+      rack
     rake (0.9.2.2)
     rb-fsevent (0.9.1)
     rdiscount (1.6.8)
@@ -40,9 +42,10 @@ GEM
       blankslate (>= 2.1.2.3)
       ffi (~> 1.0.7)
     sass (3.1.18)
-    sinatra (1.2.6)
-      rack (~> 1.1)
-      tilt (>= 1.2.2, < 2.0)
+    sinatra (1.3.2)
+      rack (~> 1.3, >= 1.3.6)
+      rack-protection (~> 1.2)
+      tilt (~> 1.3, >= 1.3.3)
     stringex (1.4.0)
     syntax (1.0.0)
     tilt (1.3.3)
@@ -52,15 +55,15 @@ PLATFORMS
 
 DEPENDENCIES
   RedCloth
-  compass (>= 0.11)
-  haml (>= 3.1)
-  jekyll
-  liquid (= 2.2.2)
+  compass (~> 0.12)
+  haml (~> 3.1)
+  jekyll (~> 0.11)
+  liquid (~> 2.3)
   pygments.rb
   rack
   rake
-  rb-fsevent
+  rb-fsevent (~> 0.9)
   rdiscount
   rubypants
-  sinatra (= 1.2.6)
+  sinatra (~> 1.3)
   stringex