diff --git a/Gemfile.lock b/Gemfile.lock
index cf47c04..d6f6c30 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,8 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     ast (2.4.0)
     buff-config (2.0.0)
       buff-extensions (~> 2.0)
@@ -102,7 +102,7 @@ GEM
     pry (0.11.3)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    public_suffix (3.0.2)
+    public_suffix (5.0.0)
     puma (3.11.4)
     pygments.rb (1.2.1)
       multi_json (>= 1.0.0)