diff --git a/Gemfile.lock b/Gemfile.lock
index d486e5d..9412bb5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -53,8 +53,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.6.0)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     arel (9.0.0)
     ast (2.4.0)
     awesome_print (1.8.0)
@@ -160,7 +160,7 @@ GEM
       binding_of_caller (>= 0.7)
       pry (>= 0.9.11)
     psych (3.1.0)
-    public_suffix (3.0.3)
+    public_suffix (4.0.6)
     rack (2.0.7)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)