diff --git a/Gemfile.lock b/Gemfile.lock
index 95658e3..321a258 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -18,8 +18,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.6.0)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     amq-protocol (2.3.0)
     amqp (1.8.0)
       amq-protocol (>= 2.2.0)
@@ -70,7 +70,7 @@ GEM
     pry-byebug (3.7.0)
       byebug (~> 11.0)
       pry (~> 0.10)
-    public_suffix (3.0.3)
+    public_suffix (5.0.0)
     rake (10.5.0)
     rspec (3.8.0)
       rspec-core (~> 3.8.0)