diff --git a/Gemfile.lock b/Gemfile.lock
index 25c208a..ab62eb0 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 (3.17.1)
     colorator (1.1.0)
     concurrent-ruby (1.1.5)
@@ -56,7 +56,7 @@ GEM
     multi_json (1.14.1)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (3.0.3)
+    public_suffix (5.0.0)
     rack (1.6.13)
     rack-protection (1.5.5)
       rack