diff --git a/backend/Gemfile.lock b/backend/Gemfile.lock
index 8780db3d..0e62d56c 100644
--- a/backend/Gemfile.lock
+++ b/backend/Gemfile.lock
@@ -91,7 +91,7 @@ GEM
     listen (3.7.1)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
-    loofah (2.17.0)
+    loofah (2.19.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
@@ -104,14 +104,14 @@ GEM
     minitest (5.15.0)
     msgpack (1.4.5)
     nio4r (2.5.8)
-    nokogiri (1.13.6)
+    nokogiri (1.13.10)
       mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
     pg (1.3.5)
     public_suffix (4.0.7)
     puma (5.6.4)
       nio4r (~> 2.0)
-    racc (1.6.0)
+    racc (1.6.1)
     rack (2.2.3)
     rack-cors (1.1.1)
       rack (>= 2.0.0)
@@ -137,8 +137,8 @@ GEM
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.4.2)
-      loofah (~> 2.3)
+    rails-html-sanitizer (1.4.4)
+      loofah (~> 2.19, >= 2.19.1)
     railties (6.1.6)
       actionpack (= 6.1.6)
       activesupport (= 6.1.6)