diff --git a/Gemfile.lock b/Gemfile.lock
index 0f4e1e5..bb88605 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,8 @@
 GEM
   remote: http://rubygems.org/
   specs:
-    addressable (2.3.2)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     builder (3.2.2)
     crack (0.3.2)
     diff-lcs (1.1.3)
@@ -12,6 +13,7 @@ GEM
       multi_xml
     multi_json (1.5.0)
     multi_xml (0.5.2)
+    public_suffix (5.0.0)
     rake (12.3.3)
     rspec (2.12.0)
       rspec-core (~> 2.12.0)