diff --git a/Gemfile.lock b/Gemfile.lock
index cbdb2ff..6abbccd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -68,8 +68,8 @@ GEM
       i18n (~> 0.7)
       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)
     arel (8.0.0)
@@ -192,7 +192,7 @@ GEM
       activerecord (>= 4.2)
       activesupport (>= 4.2)
       arel (>= 6)
-    public_suffix (3.0.0)
+    public_suffix (4.0.6)
     puma (3.10.0)
     rack (2.0.3)
     rack-test (0.7.0)