diff --git a/Gemfile.lock b/Gemfile.lock
index b931c6a..2d8330f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -59,10 +59,10 @@ GEM
       jekyll (>= 3.5, < 5.0)
       jekyll-feed (~> 0.9)
       jekyll-seo-tag (~> 2.1)
-    nokogiri (1.13.6)
+    nokogiri (1.13.9)
       mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
-    nokogiri (1.13.6-x86_64-darwin)
+    nokogiri (1.13.9-x86_64-darwin)
       racc (~> 1.4)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)