diff --git a/Gemfile.lock b/Gemfile.lock
index 30a498c..1d78dc2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -148,7 +148,9 @@ GEM
       mimemagic (~> 0.3.2)
     memoist (0.16.2)
     method_source (1.0.0)
-    mimemagic (0.3.5)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
     minitest (5.14.1)
@@ -255,7 +257,7 @@ GEM
     thor (0.20.3)
     thread_safe (0.3.6)
     tilt (2.0.10)
-    tzinfo (1.2.7)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     uber (0.1.0)
     uglifier (4.2.0)