diff --git a/Gemfile.lock b/Gemfile.lock
index 1b854b57..0130e58e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -147,7 +147,9 @@ GEM
       thread_safe (~> 0.3, >= 0.3.1)
     metaclass (0.0.4)
     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)
@@ -269,7 +271,7 @@ GEM
       multipart-post (~> 2.0)
       naught (~> 1.0)
       simple_oauth (~> 0.3.0)
-    tzinfo (1.2.5)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     uglifier (4.1.19)
       execjs (>= 0.3.0, < 3)