diff --git a/demo_app/Gemfile.lock b/demo_app/Gemfile.lock
index 2bb7a8a..40c670f 100644
--- a/demo_app/Gemfile.lock
+++ b/demo_app/Gemfile.lock
@@ -102,7 +102,7 @@ GEM
     minitest (5.11.3)
     msgpack (1.3.1)
     nio4r (2.5.1)
-    nokogiri (1.10.4)
+    nokogiri (1.10.8)
       mini_portile2 (~> 2.4.0)
     public_suffix (4.0.1)
     puma (3.12.1)