diff --git a/examples/rails-custom-login-page/Gemfile.lock b/examples/rails-custom-login-page/Gemfile.lock
index 63670f8..22eed3a 100644
--- a/examples/rails-custom-login-page/Gemfile.lock
+++ b/examples/rails-custom-login-page/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 (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     arel (8.0.0)
     bindex (0.5.0)
     builder (3.2.3)
@@ -103,7 +103,7 @@ GEM
     onelogin (1.5.0)
       httparty (>= 0.13.7)
       nokogiri (>= 1.6.3.1)
-    public_suffix (3.0.2)
+    public_suffix (4.0.6)
     puma (3.12.2)
     rack (2.0.8)
     rack-test (0.8.3)