diff --git a/examples/rails-custom-login-page/Gemfile.lock b/examples/rails-custom-login-page/Gemfile.lock
index de25f0e..d896a2f 100644
--- a/examples/rails-custom-login-page/Gemfile.lock
+++ b/examples/rails-custom-login-page/Gemfile.lock
@@ -100,7 +100,7 @@ GEM
       httparty (>= 0.13.7)
       nokogiri (>= 1.6.3.1)
     public_suffix (3.0.2)
-    puma (3.12.2)
+    puma (3.12.3)
     rack (2.0.8)
     rack-test (0.8.3)
       rack (>= 1.0, < 3)