diff --git a/Gemfile.lock b/Gemfile.lock
index 662c1a6..a87b5ba 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -35,7 +35,8 @@ GEM
     activesupport (3.2.13)
       i18n (= 0.6.1)
       multi_json (~> 1.0)
-    addressable (2.3.4)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     arel (3.0.2)
     bcrypt-ruby (3.0.1)
     builder (3.0.4)
@@ -133,6 +134,7 @@ GEM
       mime-types
     pg (0.15.1)
     polyglot (0.3.3)
+    public_suffix (5.0.0)
     rack (1.4.5)
     rack-cache (1.2)
       rack (>= 0.4)