diff --git a/examples/rails/Gemfile.lock b/examples/rails/Gemfile.lock
index 43dc8a5..cee44e4 100644
--- a/examples/rails/Gemfile.lock
+++ b/examples/rails/Gemfile.lock
@@ -81,9 +81,13 @@ GEM
       actionpack (>= 3.2.0, < 6.2)
     method_source (1.0.0)
     mini_mime (1.0.3)
+    mini_portile2 (2.6.1)
     minitest (5.14.4)
     nio4r (2.5.7)
-    nokogiri (1.11.6-x86_64-darwin)
+    nokogiri (1.12.5)
+      mini_portile2 (~> 2.6.1)
+      racc (~> 1.4)
+    nokogiri (1.12.5-x86_64-darwin)
       racc (~> 1.4)
     racc (1.5.2)
     rack (2.2.3)