diff --git a/Gemfile b/Gemfile
index e4db11df..7f1f42cf 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,7 @@
-source :gemcutter
 source :rubygems
 
-gem 'interactive_editor', '>=0.0.4'
-gem 'awesome_print',      '>=0.2.1'
+gem 'asdf',               '>=0.5.0'
+gem 'awesome_print',      '>=0.3.2'
+gem 'interactive_editor', '>=0.0.6'
 gem 'maruku',             '>=0.6.0'
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 72352d8f..1fcd0363 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,12 +1,14 @@
 GEM
-  remote: http://rubygems.org/
   remote: http://rubygems.org/
   specs:
-    awesome_print (0.2.1)
-    interactive_editor (0.0.4)
+    asdf (0.5.0)
+      rack (~> 1.2.1)
+    awesome_print (0.3.2)
+    interactive_editor (0.0.6)
       spoon (>= 0.0.1)
     maruku (0.6.0)
       syntax (>= 1.0.0)
+    rack (1.2.1)
     spoon (0.0.1)
     syntax (1.0.0)
 
@@ -14,6 +16,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  awesome_print (>= 0.2.1)
-  interactive_editor (>= 0.0.4)
+  asdf (>= 0.5.0)
+  awesome_print (>= 0.3.2)
+  interactive_editor (>= 0.0.6)
   maruku (>= 0.6.0)