diff --git a/Gemfile.lock b/Gemfile.lock
index 8e17f0a..aa0ffb9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -51,7 +51,8 @@ GEM
       tzinfo (~> 1.1)
     acts_as_list (0.7.2)
       activerecord (>= 3.0)
-    addressable (2.3.8)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     ae_users_migrator (1.0.6)
       activerecord (>= 2.3)
     ansi (1.5.0)
@@ -311,6 +312,7 @@ GEM
       spoon (~> 0.0)
     pry-rails (0.3.4)
       pry (>= 0.9.10)
+    public_suffix (4.0.6)
     puma (5.3.1)
       nio4r (~> 2.0)
     puma (5.3.1-java)