diff --git a/Gemfile.lock b/Gemfile.lock
index d090502..43892ac 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -100,7 +100,9 @@ GEM
     mime-types (3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
-    mimemagic (0.3.2)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.0)
     mini_portile2 (2.3.0)
     minitest (5.11.3)
@@ -168,7 +170,7 @@ GEM
     sqlite3 (1.3.13)
     thor (0.19.4)
     thread_safe (0.3.6)
-    tzinfo (1.2.5)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     unf (0.1.4)
       unf_ext