diff --git a/Gemfile.lock b/Gemfile.lock
index d5a3497..95b7944 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -60,16 +60,20 @@ GEM
     mail (2.7.1)
       mini_mime (>= 0.1.1)
     method_source (0.9.2)
-    mimemagic (0.3.3)
+    mimemagic (0.4.3)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.1)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.6.1)
     minitest (5.11.3)
     nio4r (2.3.1)
-    nokogiri (1.10.5)
-      mini_portile2 (~> 2.4.0)
-    nokogiri (1.10.5-x86-mingw32)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.12.5)
+      mini_portile2 (~> 2.6.1)
+      racc (~> 1.4)
+    nokogiri (1.12.5-x86-mingw32)
+      racc (~> 1.4)
     puma (3.12.1)
+    racc (1.5.2)
     rack (2.1.2)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)