diff --git a/Gemfile.lock b/Gemfile.lock
index 622eb77..d96c5ce 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -28,8 +28,8 @@ GEM
     activesupport (3.2.22.5)
       i18n (~> 0.6, >= 0.6.4)
       multi_json (~> 1.0)
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     aes_key_wrap (1.0.1)
     ansi (1.5.0)
     arel (3.0.3)