diff --git a/Gemfile.lock b/Gemfile.lock
index 1d1133f..0e45b0d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -37,7 +37,8 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     arel (6.0.3)
     bcrypt (3.1.10)
     binding_of_caller (0.7.2)
@@ -267,6 +268,7 @@ GEM
       slop (~> 3.4)
     pry-rails (0.3.4)
       pry (>= 0.9.10)
+    public_suffix (3.1.1)
     rack (1.6.4)
     rack-protection (1.5.3)
       rack