diff --git a/Gemfile.lock b/Gemfile.lock
index c42adbf..44a8ff2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -28,7 +28,8 @@ GEM
     activesupport (3.2.11)
       i18n (~> 0.6)
       multi_json (~> 1.0)
-    addressable (2.3.2)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     annotate (2.5.0)
       rake
     arel (3.0.2)
@@ -118,6 +119,7 @@ GEM
       coderay (~> 1.0.5)
       method_source (~> 0.8)
       slop (~> 3.3.1)
+    public_suffix (5.0.0)
     rack (1.4.3)
     rack-cache (1.2)
       rack (>= 0.4)