diff --git a/prebuild/draco-master/docs/Gemfile.lock b/prebuild/draco-master/docs/Gemfile.lock
index e7af33bd25..fd9f421703 100644
--- a/prebuild/draco-master/docs/Gemfile.lock
+++ b/prebuild/draco-master/docs/Gemfile.lock
@@ -205,7 +205,7 @@ GEM
       jekyll-seo-tag (~> 2.1)
     minitest (5.11.3)
     multipart-post (2.0.0)
-    nokogiri (1.10.1)
+    nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
     octokit (4.13.0)
       sawyer (~> 0.8.0, >= 0.5.3)