diff --git a/Gemfile.lock b/Gemfile.lock
index ecf4522..54e5d6a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -23,7 +23,7 @@ GEM
     method_source (1.0.0)
     mini_portile2 (2.8.0)
     minitest (5.14.4)
-    nokogiri (1.13.6)
+    nokogiri (1.13.9)
       mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
     nori (2.6.0)