diff --git a/backend/Gemfile.lock b/backend/Gemfile.lock
index 8ca180a..7881ee9 100644
--- a/backend/Gemfile.lock
+++ b/backend/Gemfile.lock
@@ -133,7 +133,7 @@ GEM
     multi_xml (0.6.0)
     mysql2 (0.5.4)
     nio4r (2.5.8)
-    nokogiri (1.13.8)
+    nokogiri (1.13.9)
       mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
     numerizer (0.1.1)