diff --git a/Gemfile.lock b/Gemfile.lock
index 997a06ff..aee6bf4e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -46,7 +46,8 @@ GEM
       multi_json (~> 1.0)
     acts_as_list (0.4.0)
       activerecord (>= 3.0)
-    addressable (2.3.6)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     arel (3.0.3)
     builder (3.0.4)
     capistrano (2.15.5)
@@ -186,6 +187,7 @@ GEM
       coderay (~> 1.0)
       method_source (~> 0.8)
       slop (~> 3.4)
+    public_suffix (4.0.6)
     rack (1.4.5)
     rack-cache (1.2)
       rack (>= 0.4)