diff --git a/Gemfile.lock b/Gemfile.lock
index 0f087bd..88d1d12 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,8 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.6.0)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     backports (3.14.0)
     coderay (1.1.2)
     css_parser (1.7.0)
@@ -25,7 +25,7 @@ GEM
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    public_suffix (3.0.3)
+    public_suffix (5.0.0)
     puma (3.12.1)
     rack (2.0.7)
     rack-contrib (2.1.0)