diff --git a/Gemfile.lock b/Gemfile.lock
index 8ad01c9f..fdf827c7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -42,8 +42,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.7.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     administrate (0.14.0)
       actionpack (>= 4.2)
       actionview (>= 4.2)
@@ -189,7 +189,7 @@ GEM
       pry (~> 0.10)
     pry-rails (0.3.9)
       pry (>= 0.10.4)
-    public_suffix (4.0.6)
+    public_suffix (5.0.0)
     puma (4.3.7)
       nio4r (~> 2.0)
     pundit (1.1.0)