diff --git a/Gemfile b/Gemfile
index b744ba1..65ff4f2 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,7 +3,7 @@ source :rubygems
 group :development do
   gem "RedCloth", "~> 4.2"
   gem "foreman",  "~> 0.13"
-  gem "serve",    "~> 1.0"
+  gem "serve", "~> 1.5", ">= 1.5.0"
   gem "jekyll",   "~> 0.10"
-  gem "thin",     "~> 1.2"
+  gem "thin", "~> 1.2", ">= 1.2.11"
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index 8b54f2a..20fb187 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,17 +2,21 @@ GEM
   remote: http://rubygems.org/
   specs:
     RedCloth (4.2.7)
-    activesupport (3.0.7)
+    activesupport (3.2.22.5)
+      i18n (~> 0.6, >= 0.6.4)
+      multi_json (~> 1.0)
     classifier (1.3.3)
       fast-stemmer (>= 1.0.0)
-    daemons (1.1.3)
+    concurrent-ruby (1.1.5)
+    daemons (1.3.1)
     directory_watcher (1.4.0)
-    eventmachine (0.12.10)
+    eventmachine (1.2.7)
     fast-stemmer (1.0.0)
     foreman (0.13.0)
       term-ansicolor (~> 1.0.5)
       thor (>= 0.13.6)
-    i18n (0.4.2)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     jekyll (0.10.0)
       classifier (>= 1.3.1)
       directory_watcher (>= 1.1.1)
@@ -21,20 +25,27 @@ GEM
     liquid (2.2.2)
     maruku (0.6.0)
       syntax (>= 1.0.0)
-    rack (1.2.2)
-    serve (1.0.0)
-      activesupport (~> 3.0.1)
-      i18n (~> 0.4.1)
-      rack (~> 1.2.1)
-      tzinfo (~> 0.3.23)
+    multi_json (1.14.1)
+    rack (1.5.5)
+    rack-test (0.6.3)
+      rack (>= 1.0)
+    serve (1.5.2)
+      activesupport (~> 3.2.12)
+      i18n
+      rack (~> 1.5.2)
+      rack-test (~> 0.6.2)
+      tilt (~> 1.3.3)
+      tzinfo
     syntax (1.0.0)
     term-ansicolor (1.0.5)
-    thin (1.2.11)
-      daemons (>= 1.0.9)
-      eventmachine (>= 0.12.6)
-      rack (>= 1.0.0)
+    thin (1.7.2)
+      daemons (~> 1.0, >= 1.0.9)
+      eventmachine (~> 1.0, >= 1.0.4)
+      rack (>= 1, < 3)
     thor (0.14.6)
-    tzinfo (0.3.27)
+    tilt (1.3.7)
+    tzinfo (2.0.1)
+      concurrent-ruby (~> 1.0)
 
 PLATFORMS
   ruby
@@ -43,5 +54,8 @@ DEPENDENCIES
   RedCloth (~> 4.2)
   foreman (~> 0.13)
   jekyll (~> 0.10)
-  serve (~> 1.0)
-  thin (~> 1.2)
+  serve (~> 1.5, >= 1.5.0)
+  thin (~> 1.2, >= 1.2.11)
+
+BUNDLED WITH
+   1.17.3