diff --git a/app/Gemfile.lock b/app/Gemfile.lock
index a00f229..1497828 100644
--- a/app/Gemfile.lock
+++ b/app/Gemfile.lock
@@ -38,8 +38,8 @@ 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)
     bcrypt (3.1.11)
     bindex (0.5.0)
@@ -96,7 +96,7 @@ GEM
     nokogiri (1.8.1)
       mini_portile2 (~> 2.3.0)
     pg (0.21.0)
-    public_suffix (3.0.1)
+    public_suffix (5.0.0)
     puma (3.11.0)
     rack (2.0.3)
     rack-cors (1.0.5)