diff --git a/Gemfile.lock b/Gemfile.lock
index 3c9df4cdb..09228146d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -72,7 +72,9 @@ GEM
       rb-inotify (~> 0.9, >= 0.9.7)
       ruby_dep (~> 1.2)
     mercenary (0.3.6)
-    mimemagic (0.3.3)
+    mimemagic (0.4.3)
+      nokogiri (~> 1)
+      rake
     mini_portile2 (2.4.0)
     minitest (5.11.3)
     multi_json (1.13.1)
@@ -99,7 +101,7 @@ GEM
       ffi (~> 1.9)
       rake
     thread_safe (0.3.6)
-    tzinfo (1.2.5)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
 
 PLATFORMS