diff --git a/back-end/Gemfile.lock b/back-end/Gemfile.lock
index cc495c2..9956111 100644
--- a/back-end/Gemfile.lock
+++ b/back-end/Gemfile.lock
@@ -100,7 +100,7 @@ GEM
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
       ruby_dep (~> 1.2)
-    loofah (2.11.0)
+    loofah (2.19.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
@@ -112,17 +112,17 @@ GEM
     mime-types-data (3.2021.0704)
     mini_magick (4.11.0)
     mini_mime (1.1.0)
-    mini_portile2 (2.6.1)
+    mini_portile2 (2.8.0)
     minitest (5.14.4)
     msgpack (1.4.2)
     newrelic_rpm (7.2.0)
     nio4r (2.5.8)
-    nokogiri (1.12.3)
-      mini_portile2 (~> 2.6.1)
+    nokogiri (1.13.10)
+      mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
     pg (1.2.3)
     puma (3.12.6)
-    racc (1.5.2)
+    racc (1.6.1)
     rack (2.2.3)
     rack-cors (1.1.1)
       rack (>= 2.0.0)
@@ -144,8 +144,8 @@ GEM
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.3.0)
-      loofah (~> 2.3)
+    rails-html-sanitizer (1.4.4)
+      loofah (~> 2.19, >= 2.19.1)
     railties (5.2.6)
       actionpack (= 5.2.6)
       activesupport (= 5.2.6)