diff --git a/backend/Gemfile.lock b/backend/Gemfile.lock
index 88897204..60b61ffa 100644
--- a/backend/Gemfile.lock
+++ b/backend/Gemfile.lock
@@ -100,7 +100,7 @@ GEM
     minitest (5.13.0)
     msgpack (1.3.3)
     nio4r (2.5.2)
-    nokogiri (1.10.5)
+    nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
     pg (1.1.4)
     public_suffix (4.0.1)