diff --git a/Gemfile.lock b/Gemfile.lock
index 356adb2..31aa27a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -131,9 +131,11 @@ GEM
       mimemagic (~> 0.3.2)
     memoist (0.16.0)
     method_source (0.9.0)
-    mimemagic (0.3.2)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.0)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.8.0)
     mini_racer (0.1.15)
       libv8 (~> 6.3)
     minitest (5.11.3)
@@ -144,8 +146,9 @@ GEM
       mustermann (~> 1.0.0)
     mysql2 (0.4.10)
     nio4r (2.3.1)
-    nokogiri (1.8.2)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.13.4)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     parallel (1.12.1)
     parser (2.5.1.0)
       ast (~> 2.4.0)
@@ -158,6 +161,7 @@ GEM
       pry (~> 0.10)
     public_suffix (3.0.2)
     puma (3.11.4)
+    racc (1.6.0)
     rack (2.0.5)
     rack-accept (0.4.5)
       rack (>= 0.4)