diff --git a/Gemfile.lock b/Gemfile.lock
index 821fcd8..b2321ab 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.3.5)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     bcrypt-ruby (3.1.1)
     capybara (2.1.0)
       mime-types (>= 1.16)
@@ -128,6 +129,7 @@ GEM
       coderay (~> 1.0.5)
       method_source (~> 0.8)
       slop (~> 3.4)
+    public_suffix (5.0.0)
     puma (3.12.6)
     rack (1.6.13)
     rack-protection (1.5.0)