diff --git a/programmers_preferences_backend/Gemfile.lock b/programmers_preferences_backend/Gemfile.lock
index d6ab7aa..cc34fc5 100644
--- a/programmers_preferences_backend/Gemfile.lock
+++ b/programmers_preferences_backend/Gemfile.lock
@@ -84,17 +84,21 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (1.0.0)
-    mimemagic (0.3.4)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.2)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.6.1)
     minitest (5.14.0)
     msgpack (1.3.3)
     nio4r (2.5.2)
-    nokogiri (1.10.9)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.12.5)
+      mini_portile2 (~> 2.6.1)
+      racc (~> 1.4)
     pg (1.2.3)
     puma (4.3.3)
       nio4r (~> 2.0)
+    racc (1.5.2)
     rack (2.2.2)
     rack-cors (1.1.1)
       rack (>= 2.0.0)