diff --git a/Gemfile.lock b/Gemfile.lock
index 8fd3782..75f47d4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -39,8 +39,8 @@ 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)
     ast (2.3.0)
     awesome_print (1.8.0)
@@ -417,7 +417,7 @@ GEM
       yard (~> 0.9.11)
     pry-rails (0.3.6)
       pry (>= 0.10.4)
-    public_suffix (3.0.2)
+    public_suffix (4.0.7)
     puma (3.12.4)
     rack (2.2.2)
     rack-cors (1.0.5)