diff --git a/Gemfile.lock b/Gemfile.lock
index 2873b4a..f53d049 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,8 @@
 GEM
   remote: http://rubygems.org/
   specs:
-    addressable (2.3.5)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     builder (3.2.2)
     coderay (1.1.0)
     diff-lcs (1.1.3)
@@ -50,6 +51,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
       slop (~> 3.4)
+    public_suffix (4.0.6)
     rack (1.5.2)
     rake (10.1.0)
     rdoc (4.0.1)