diff --git a/Gemfile.lock b/Gemfile.lock
index 92ec5e5..d6a088a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,7 +7,8 @@ PATH
 GEM
   remote: http://rubygems.org/
   specs:
-    addressable (2.4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
     diff-lcs (1.2.5)
@@ -15,6 +16,7 @@ GEM
       multipart-post (>= 1.2, < 3)
     hashdiff (0.2.3)
     multipart-post (2.0.0)
+    public_suffix (5.0.0)
     rspec (2.99.0)
       rspec-core (~> 2.99.0)
       rspec-expectations (~> 2.99.0)