diff --git a/Gemfile.lock b/Gemfile.lock
index a3c7c0f..abb5f7f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,8 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.7.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     buftok (0.2.0)
     concurrent-ruby (1.1.5)
     domain_name (0.5.20190701)
@@ -27,7 +27,7 @@ GEM
       thread_safe (~> 0.3, >= 0.3.1)
     multipart-post (2.1.1)
     naught (1.1.0)
-    public_suffix (4.0.3)
+    public_suffix (5.0.0)
     raabro (1.1.6)
     rufus-scheduler (3.6.0)
       fugit (~> 1.1, >= 1.1.6)