diff --git a/Gemfile.lock b/Gemfile.lock
index 3aa07cd..5fd6298 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -115,9 +115,11 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (0.9.2)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.2)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.6.1)
     minitest (5.13.0)
     msgpack (1.3.1)
     multi_json (1.14.1)
@@ -126,10 +128,12 @@ GEM
     mustermann-grape (1.0.1)
       mustermann (>= 1.0.0)
     nio4r (2.5.2)
-    nokogiri (1.10.5)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.12.5)
+      mini_portile2 (~> 2.6.1)
+      racc (~> 1.4)
     pg (1.1.4)
     puma (3.12.1)
+    racc (1.5.2)
     rack (2.0.7)
     rack-accept (0.4.5)
       rack (>= 0.4)