diff --git a/Gemfile.lock b/Gemfile.lock
index 6588a0e..b149405 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -57,8 +57,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     airbrussh (1.3.0)
       sshkit (>= 1.6.1, != 1.7.0)
     archive-zip (0.11.0)
@@ -213,7 +213,7 @@ GEM
     pg (1.0.0)
     polyamorous (1.3.3)
       activerecord (>= 3.0)
-    public_suffix (3.0.2)
+    public_suffix (4.0.6)
     puma (4.3.8)
       nio4r (~> 2.0)
     racc (1.5.2)