diff --git a/Gemfile.lock b/Gemfile.lock
index a839559..35a2663 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -38,8 +38,8 @@ GEM
       i18n (>= 0.7, < 2)
       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)
     bindex (0.5.0)
     builder (3.2.3)
@@ -89,7 +89,7 @@ GEM
     nio4r (2.3.1)
     nokogiri (1.8.5)
       mini_portile2 (~> 2.3.0)
-    public_suffix (3.0.3)
+    public_suffix (5.0.0)
     puma (3.12.0)
     rack (2.0.5)
     rack-test (1.1.0)