diff --git a/Gemfile.lock b/Gemfile.lock
index 906a073..5aed792 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -100,12 +100,14 @@ GEM
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_backtrace (0.1.3)
       minitest (> 1.2.0)
       rails (>= 2.3.3)
     mini_mime (1.0.1)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.5.1)
     minitest (5.8.1)
     minitest-reporters (1.0.5)
       ansi
@@ -114,8 +116,9 @@ GEM
       ruby-progressbar
     multi_json (1.13.1)
     nenv (0.3.0)
-    nokogiri (1.9.1)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.11.4)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     notiffany (0.1.1)
       nenv (~> 0.1)
       shellany (~> 0.0)
@@ -141,6 +144,7 @@ GEM
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
+    racc (1.5.2)
     rack (1.6.11)
     rack-test (0.6.3)
       rack (>= 1.0)