diff --git a/Gemfile.lock b/Gemfile.lock
index f675753..e04dc30 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,8 +9,8 @@ PATH
 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)
     aruba (0.14.10)
       childprocess (>= 0.6.3, < 1.1.0)
       contracts (~> 0.9)
@@ -48,7 +48,7 @@ GEM
     multi_test (0.1.2)
     nokogiri (1.10.3)
       mini_portile2 (~> 2.4.0)
-    public_suffix (3.1.1)
+    public_suffix (5.0.0)
     rack (2.0.7)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)