diff --git a/Gemfile.lock b/Gemfile.lock
index 8da3c75..434cde3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -43,8 +43,8 @@ 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)
     airbrussh (1.3.0)
       sshkit (>= 1.6.1, != 1.7.0)
     arel (8.0.0)
@@ -250,7 +250,7 @@ GEM
       pry (~> 0.10)
     pry-rails (0.3.6)
       pry (>= 0.10.4)
-    public_suffix (3.0.1)
+    public_suffix (5.0.0)
     puma (3.11.0)
     pundit (1.1.0)
       activesupport (>= 3.0.0)