diff --git a/projects/cas3-and-delius/tech-docs/Gemfile.lock b/projects/cas3-and-delius/tech-docs/Gemfile.lock
index b738bc06cd..c4f0ebe665 100644
--- a/projects/cas3-and-delius/tech-docs/Gemfile.lock
+++ b/projects/cas3-and-delius/tech-docs/Gemfile.lock
@@ -125,7 +125,7 @@ GEM
       rouge (~> 3.2)
     minitest (5.19.0)
     multi_json (1.15.0)
-    nokogiri (1.16.2-x86_64-linux)
+    nokogiri (1.16.5-x86_64-linux)
       racc (~> 1.4)
     openapi3_parser (0.9.2)
       commonmarker (~> 0.17)