diff --git a/Gemfile.lock b/Gemfile.lock
index 407cc6d96..fd17bcb22 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -6,7 +6,8 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.3.5)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     aruba (0.5.3)
       childprocess (>= 0.3.6)
       cucumber (>= 1.1.1)
@@ -29,6 +30,7 @@ GEM
     json (1.8.0)
     multi_json (1.8.0)
     mustache (0.99.4)
+    public_suffix (5.0.0)
     rack (1.5.2)
     rack-protection (1.5.0)
       rack