diff --git a/Gemfile.lock b/Gemfile.lock
index e74e337..4b7a096 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -25,7 +25,8 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.3.6)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     binding_of_caller (0.7.2)
       debug_inspector (>= 0.0.1)
     byebug (3.5.1)
@@ -84,6 +85,7 @@ GEM
     pry-stack_explorer (0.4.9.1)
       binding_of_caller (>= 0.7)
       pry (>= 0.9.11)
+    public_suffix (4.0.6)
     rspec (3.1.0)
       rspec-core (~> 3.1.0)
       rspec-expectations (~> 3.1.0)