diff --git a/Gemfile.lock b/Gemfile.lock
index 379155b..4195922 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,8 @@
 GEM
   remote: http://rubygems.org/
   specs:
-    addressable (2.3.2)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     chunky_png (1.2.6)
     coderay (1.0.8)
     coffee-script (2.2.0)
@@ -44,6 +45,7 @@ GEM
       coderay (~> 1.0.5)
       method_source (~> 0.8)
       slop (~> 3.3.1)
+    public_suffix (5.0.0)
     rake (0.9.2.2)
     rb-fsevent (0.9.2)
     rb-readline (0.4.2)