diff --git a/Gemfile.lock b/Gemfile.lock
index 6106875..42398e1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -181,13 +181,16 @@ GEM
     mime-types (3.3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2019.1009)
-    mimemagic (0.3.3)
+    mimemagic (0.4.3)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.2)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.5.1)
     minitest (5.13.0)
     mysql2 (0.5.3)
-    nokogiri (1.10.7)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.11.5)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     parallel (1.19.1)
     parser (2.7.0.1)
       ast (~> 2.4.0)
@@ -195,6 +198,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     public_suffix (4.0.3)
+    racc (1.5.2)
     rack (2.0.8)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)