diff --git a/Gemfile.lock b/Gemfile.lock
index e5f2a00..295022b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -45,8 +45,8 @@ GEM
       i18n (~> 0.7)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     arel (8.0.0)
     binding_of_caller (0.7.3)
       debug_inspector (>= 0.0.1)
@@ -202,7 +202,7 @@ GEM
       method_source (~> 0.9.0)
     pry-rails (0.3.6)
       pry (>= 0.10.4)
-    public_suffix (3.0.0)
+    public_suffix (4.0.7)
     rack (2.2.3)
     rack-test (0.7.0)
       rack (>= 1.0, < 3)