diff --git a/Gemfile b/Gemfile
index 40e326e..97f9741 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,7 +10,7 @@ gem 'adsf'
 gem 'builder'
 gem 'mime-types'
 gem 'rack'
-gem 'unicorn'
+gem 'puma'
 gem 'rack-rewrite'
 gem 'pygments.rb', :git => 'git://github.com/akzhan/pygments.rb.git', :branch => 'rubypython-0.6'
 gem 'clogger'
diff --git a/Gemfile.lock b/Gemfile.lock
index ed8efe6..2a9b9ca 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -19,16 +19,16 @@ GEM
     cri (2.3.0)
       colored (>= 1.2)
     ffi (1.0.11)
-    kgio (2.7.4)
     mime-types (1.19)
     nanoc (3.4.0)
       cri (~> 2.2)
     nanoc-cachebuster (0.3.1)
       nanoc (>= 3.3.0)
     nokogiri (1.5.5)
+    puma (1.6.1)
+      rack (~> 1.2)
     rack (1.4.1)
     rack-rewrite (1.2.1)
-    raindrops (0.10.0)
     rainpress (1.0)
     redcarpet (2.1.1)
     rubypython (0.6.2)
@@ -39,10 +39,6 @@ GEM
       tilt (~> 1.3.3)
     temple (0.4.0)
     tilt (1.3.3)
-    unicorn (4.3.1)
-      kgio (~> 2.6)
-      rack
-      raindrops (~> 0.7)
 
 PLATFORMS
   ruby
@@ -55,10 +51,10 @@ DEPENDENCIES
   nanoc
   nanoc-cachebuster
   nokogiri
+  puma
   pygments.rb!
   rack
   rack-rewrite
   rainpress
   redcarpet
   slim
-  unicorn
diff --git a/Procfile b/Procfile
new file mode 100644
index 0000000..6916325
--- /dev/null
+++ b/Procfile
@@ -0,0 +1 @@
+web: puma -p $PORT