diff --git a/Gemfile.lock b/Gemfile.lock
index 99d733d..154005c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -115,7 +115,9 @@ 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)
@@ -204,7 +206,7 @@ GEM
       mini_portile2 (~> 2.0)
     trix (0.11.0)
       rails (> 4.1, < 5.2)
-    tzinfo (1.2.5)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     uglifier (4.1.17)
       execjs (>= 0.3.0, < 3)