diff --git a/Gemfile.lock b/Gemfile.lock
index 53fd841..efb4eb6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -27,8 +27,8 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.1)
       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)
     arel (5.0.1.20140414130214)
     builder (3.2.4)
     capybara (2.18.0)
@@ -68,7 +68,7 @@ GEM
     multi_json (1.14.1)
     nokogiri (1.10.8)
       mini_portile2 (~> 2.4.0)
-    public_suffix (4.0.3)
+    public_suffix (5.0.0)
     rack (1.5.5)
     rack-test (0.6.3)
       rack (>= 1.0)