diff --git a/Gemfile.lock b/Gemfile.lock
index ae162d3..2235e75 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.3.4)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     ansi (1.4.3)
     boxen (1.3.0)
       ansi (~> 1.4)
@@ -44,6 +45,7 @@ GEM
       hashie (~> 2.0)
       multi_json (~> 1.3)
       netrc (~> 0.7.7)
+    public_suffix (5.0.0)
     puppet (3.2.1)
       facter (~> 1.6)
       hiera (~> 1.0)