diff --git a/Gemfile.lock b/Gemfile.lock
index 86c1ebe..685279a 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 (4.0.0)
     atomic (1.1.12)
     bcrypt-ruby (3.0.1)
@@ -121,6 +122,7 @@ GEM
     pry-stack_explorer (0.4.9.1)
       binding_of_caller (>= 0.7)
       pry (>= 0.9.11)
+    public_suffix (5.0.0)
     rack (1.5.2)
     rack-contrib (1.1.0)
       rack (>= 0.9.1)