diff --git a/Gemfile.lock b/Gemfile.lock
index a26e773..92158ed 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -66,7 +66,8 @@ GEM
     acts_as_commentable (3.0.1)
     acts_as_list (0.7.2)
       activerecord (>= 3.0)
-    addressable (2.3.8)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     ansi (1.5.0)
     arbre (1.0.3)
       activesupport (>= 3.0.0)
@@ -304,6 +305,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
       slop (~> 3.4)
+    public_suffix (3.1.1)
     rack (1.6.4)
     rack-accept (0.4.5)
       rack (>= 0.4)