diff --git a/Gemfile.lock b/Gemfile.lock
index b8832a7..848bc91 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.4.0)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     builder (3.2.2)
     capybara (2.7.1)
       addressable
@@ -35,6 +36,7 @@ GEM
     multi_test (0.1.2)
     nokogiri (1.6.7.2)
       mini_portile2 (~> 2.0.0.rc2)
+    public_suffix (4.0.6)
     rack (1.6.4)
     rack-protection (1.5.3)
       rack