diff --git a/Gemfile.lock b/Gemfile.lock
index ee08d1d..5946c5b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -38,8 +38,8 @@ GEM
       i18n (~> 0.7)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     arel (8.0.0)
     backports (3.11.1)
     bindex (0.5.0)
@@ -143,7 +143,7 @@ GEM
       activerecord (>= 4.2)
       activesupport (>= 4.2)
       arel (>= 6)
-    public_suffix (3.0.1)
+    public_suffix (4.0.7)
     puma (3.11.2)
     rack (2.0.3)
     rack-test (0.8.2)