diff --git a/Gemfile.lock b/Gemfile.lock
index faaa9f3..b70ce09 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -38,7 +38,8 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.3.8)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     arel (6.0.3)
     bagit (0.3.2)
       docopt (~> 0.5.0)
@@ -110,6 +111,7 @@ GEM
     netrc (0.11.0)
     nokogiri (1.6.8.1)
       mini_portile2 (~> 2.1.0)
+    public_suffix (4.0.6)
     qa (0.3.0)
       activerecord-import
       deprecation