diff --git a/examples/simple_rails_api/Gemfile.lock b/examples/simple_rails_api/Gemfile.lock
index 9da3cb4..5417a43 100644
--- a/examples/simple_rails_api/Gemfile.lock
+++ b/examples/simple_rails_api/Gemfile.lock
@@ -71,7 +71,7 @@ GEM
     listen (3.0.8)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
-    loofah (2.12.0)
+    loofah (2.18.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
@@ -83,7 +83,7 @@ GEM
     minitest (5.14.4)
     msgpack (1.4.2)
     nio4r (2.5.8)
-    nokogiri (1.13.4)
+    nokogiri (1.13.6)
       mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
     puma (4.3.12)
@@ -110,7 +110,7 @@ GEM
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.4.2)
+    rails-html-sanitizer (1.4.3)
       loofah (~> 2.3)
     railties (6.0.4.1)
       actionpack (= 6.0.4.1)