diff --git a/Gemfile.lock b/Gemfile.lock
index d914fbd..d2b8360 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -51,8 +51,8 @@ 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)
     airbrussh (1.4.0)
       sshkit (>= 1.6.1, != 1.7.0)
     amq-protocol (2.3.2)
@@ -318,7 +318,7 @@ GEM
     pry (0.13.1)
       coderay (~> 1.1)
       method_source (~> 1.0)
-    public_suffix (4.0.6)
+    public_suffix (5.0.0)
     rack (2.2.3)
     rack-accept (0.4.5)
       rack (>= 0.4)