diff --git a/Gemfile.lock b/Gemfile.lock
index 5f00fb5..bc45b54 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -36,7 +36,8 @@ GEM
     activesupport (3.2.22.5)
       i18n (~> 0.6, >= 0.6.4)
       multi_json (~> 1.0)
-    addressable (2.3.5)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     annotate (2.5.0)
       rake
     arel (3.0.3)
@@ -167,6 +168,7 @@ GEM
       coderay (~> 1.0.5)
       method_source (~> 0.8)
       slop (~> 3.4)
+    public_suffix (5.0.0)
     puma (3.6.2)
     rack (1.4.7)
     rack-cache (1.7.1)