diff --git a/Gemfile.lock b/Gemfile.lock
index 2184e23..f0306b7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -142,7 +142,9 @@ 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 (1.0.2)
     mini_portile2 (2.4.0)
     minitest (5.11.3)
@@ -300,7 +302,7 @@ GEM
       railties (>= 4.0.0)
       trailblazer (>= 2.1.0.beta1, < 2.2.0)
       trailblazer-loader (>= 0.1.0)
-    tzinfo (1.2.5)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     uber (0.1.0)
     unicode-display_width (1.6.0)