diff --git a/Gemfile.lock b/Gemfile.lock
index 52427ef..0866160 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -414,10 +414,12 @@ GEM
     mime-types (3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
-    mimemagic (0.3.2)
+    mimemagic (0.4.3)
+      nokogiri (~> 1)
+      rake
     mini_magick (4.9.4)
     mini_mime (1.0.0)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.6.1)
     minitest (5.11.3)
     multi_json (1.14.1)
     multi_xml (0.6.0)
@@ -426,8 +428,9 @@ GEM
       rails (>= 3.1.0)
     nenv (0.3.0)
     netrc (0.11.0)
-    nokogiri (1.10.8)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.12.5)
+      mini_portile2 (~> 2.6.1)
+      racc (~> 1.4)
     notiffany (0.1.1)
       nenv (~> 0.1)
       shellany (~> 0.0)
@@ -453,6 +456,7 @@ GEM
       yard (~> 0.9.11)
     public_suffix (3.0.2)
     puma (3.12.4)
+    racc (1.5.2)
     rack (1.6.13)
     rack-contrib (1.8.0)
       rack (~> 1.4)