diff --git a/Gemfile.lock b/Gemfile.lock
index 0ca91f6..51931c5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -49,7 +49,8 @@ GIT
 GEM
   remote: http://rubygems.org/
   specs:
-    addressable (2.3.2)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     arel (3.0.2)
     builder (3.0.0)
     capybara (1.1.2)
@@ -111,6 +112,7 @@ GEM
     multi_json (1.3.6)
     nokogiri (1.5.5)
     polyglot (0.3.3)
+    public_suffix (5.0.0)
     rack (1.4.1)
     rack-cache (1.2)
       rack (>= 0.4)