diff --git a/Gemfile.lock b/Gemfile.lock
index fe10fb4..912e1bc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -170,10 +170,12 @@ GEM
       mimemagic (~> 0.3.2)
     memoist (0.16.0)
     method_source (0.9.2)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_magick (4.9.5)
     mini_mime (1.0.2)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.5.1)
     minitest (5.12.2)
     msgpack (1.3.1)
     msgpack (1.3.1-x64-mingw32)
@@ -182,10 +184,11 @@ GEM
     multipart-post (2.1.1)
     nenv (0.3.0)
     nio4r (2.5.2)
-    nokogiri (1.10.4)
-      mini_portile2 (~> 2.4.0)
-    nokogiri (1.10.4-x64-mingw32)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.11.5)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
+    nokogiri (1.11.5-x64-mingw32)
+      racc (~> 1.4)
     notiffany (0.1.3)
       nenv (~> 0.1)
       shellany (~> 0.0)
@@ -215,6 +218,7 @@ GEM
       method_source (~> 0.9.0)
     public_suffix (4.0.1)
     puma (3.12.1)
+    racc (1.5.2)
     rack (2.0.7)
     rack-proxy (0.6.5)
       rack