diff --git a/Gemfile.lock b/Gemfile.lock
index 9dc5071..727c0af 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -25,7 +25,8 @@ GEM
       multi_json (~> 1.3)
       thread_safe (~> 0.1)
       tzinfo (~> 0.3.37)
-    addressable (2.3.5)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     arel (4.0.1)
     atomic (1.1.14)
     builder (3.1.4)
@@ -77,6 +78,7 @@ GEM
       multi_xml (~> 0.5)
       rack (~> 1.2)
     polyglot (0.3.3)
+    public_suffix (5.0.0)
     rack (1.5.2)
     rack-test (0.6.2)
       rack (>= 1.0)