diff --git a/Gemfile.lock b/Gemfile.lock
index 867f144..d28cc84 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)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
     diff-lcs (1.3)
@@ -13,7 +13,7 @@ GEM
     nokogiri (1.10.3)
       mini_portile2 (~> 2.4.0)
     pg (1.1.4)
-    public_suffix (3.1.1)
+    public_suffix (5.0.0)
     rspec (2.99.0)
       rspec-core (~> 2.99.0)
       rspec-expectations (~> 2.99.0)