diff --git a/Gemfile.lock b/Gemfile.lock
index 3ceca1d..8be19fb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -15,7 +15,8 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.3.8)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     autoparse (0.3.3)
       addressable (>= 2.3.1)
       extlib (>= 0.9.15)
@@ -249,6 +250,7 @@ GEM
       coderay (~> 1.0)
       method_source (~> 0.8)
       slop (~> 3.4)
+    public_suffix (5.0.0)
     puppet (3.7.5)
       facter (> 1.6, < 3)
       hiera (~> 1.0)