diff --git a/Gemfile.lock b/Gemfile.lock
index fe7521e..b6d77a1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -18,8 +18,8 @@ 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)
     amq-protocol (2.3.1)
     amqp (1.8.0)
       amq-protocol (>= 2.2.0)
@@ -100,7 +100,7 @@ GEM
     pry-byebug (3.9.0)
       byebug (~> 11.0)
       pry (~> 0.13.0)
-    public_suffix (4.0.5)
+    public_suffix (5.0.0)
     rack (2.2.2)
     rake (10.5.0)
     rspec (3.9.0)