diff --git a/Gemfile.lock b/Gemfile.lock
index 30337c5..933f19e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -29,7 +29,8 @@ GEM
       activesupport (= 3.1.1)
     activesupport (3.1.1)
       multi_json (~> 1.0)
-    addressable (2.3.5)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     arel (2.2.3)
     aws-sdk (1.11.0)
       json (~> 1.4)
@@ -123,6 +124,7 @@ GEM
     open_uri_redirections (0.1.1)
     pg (0.11.0)
     polyglot (0.3.3)
+    public_suffix (4.0.6)
     rack (1.3.10)
     rack-cache (1.2)
       rack (>= 0.4)