diff --git a/Gemfile.lock b/Gemfile.lock
index dfb2968..b3cca3f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -283,7 +283,9 @@ GEM
       rack-contrib (>= 1.1, < 3)
       railties (>= 3.0.0, < 7)
     method_source (1.0.0)
-    mimemagic (0.3.4)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_histogram (0.1.3)
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
@@ -563,7 +565,7 @@ GEM
     turbolinks (5.2.1)
       turbolinks-source (~> 5.2)
     turbolinks-source (5.2.0)
-    tzinfo (1.2.7)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     uglifier (4.2.0)
       execjs (>= 0.3.0, < 3)