diff --git a/Gemfile.lock b/Gemfile.lock
index 79d64f7..ab8c236 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -28,7 +28,8 @@ GEM
     activesupport (3.2.3)
       i18n (~> 0.6)
       multi_json (~> 1.0)
-    addressable (2.3.1)
+    addressable (2.7.0)
+      public_suffix (>= 2.0.2, < 5.0)
     ansi (1.4.3)
     arel (3.0.2)
     bcrypt-ruby (3.0.1)
@@ -127,7 +128,8 @@ GEM
     origin (1.0.4)
     orm_adapter (0.4.0)
     polyglot (0.3.3)
-    rack (1.4.1)
+    public_suffix (4.0.1)
+    rack (1.4.7)
     rack-cache (1.2)
       rack (>= 0.4)
     rack-openid (1.3.1)