diff --git a/Gemfile.lock b/Gemfile.lock
index 2604f99..2a3cf49 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,8 @@
 GEM
   remote: http://rubygems.org/
   specs:
-    addressable (2.3.5)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     builder (3.2.2)
     cucumber (1.3.5)
       builder (>= 2.1.2)
@@ -49,6 +50,7 @@ GEM
       multi_json (~> 1.0)
       multi_xml (~> 0.5)
       rack (~> 1.2)
+    public_suffix (5.0.0)
     rack (1.5.2)
     rake (10.1.0)
     rdoc (3.12.2)