diff --git a/Gemfile.lock b/Gemfile.lock
index e93c25f..75c65c7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.3.7)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     bcrypt (3.1.10)
     bcrypt-ruby (3.1.5)
       bcrypt (>= 3.1.3)
@@ -50,6 +51,7 @@ GEM
     json (1.8.2)
     json_pure (1.8.2)
     multi_json (1.11.0)
+    public_suffix (4.0.6)
     rack (1.6.13)
     rack-protection (1.5.5)
       rack