diff --git a/Gemfile.lock b/Gemfile.lock
index e5237fd..1fa3571 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -120,7 +120,9 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (0.9.2)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.1)
     mini_portile2 (2.4.0)
     minitest (5.11.3)
@@ -219,7 +221,7 @@ GEM
     thor (0.20.3)
     thread_safe (0.3.6)
     timers (4.3.0)
-    tzinfo (1.2.5)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     uber (0.1.0)
     virtus (1.0.5)