diff --git a/back-end/Gemfile.lock b/back-end/Gemfile.lock
index b464141..9e01054 100644
--- a/back-end/Gemfile.lock
+++ b/back-end/Gemfile.lock
@@ -65,17 +65,19 @@ GEM
     mime-types (3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.8.0)
     minitest (5.10.1)
     multi_json (1.12.1)
     nio4r (2.0.0)
-    nokogiri (1.10.5)
-      mini_portile2 (~> 2.4.0)
-    nokogiri (1.10.5-x64-mingw32)
-      mini_portile2 (~> 2.4.0)
-    nokogiri (1.10.5-x86-mingw32)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.13.6)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
+    nokogiri (1.13.6-x64-mingw32)
+      racc (~> 1.4)
+    nokogiri (1.13.6-x86-mingw32)
+      racc (~> 1.4)
     puma (3.8.2)
+    racc (1.6.0)
     rack (2.0.1)
     rack-cors (1.0.5)
       rack (>= 1.6.0)