diff --git a/Gemfile.lock b/Gemfile.lock
index 21dd29b..8fad78d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -171,7 +171,9 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (0.9.2)
-    mimemagic (0.3.2)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.1)
     mini_portile2 (2.4.0)
     minitest (5.12.2)
@@ -332,7 +334,7 @@ GEM
       execjs (~> 2.7)
       less-rails (~> 2.8, >= 2.8.0)
       railties (~> 5.0, >= 5.0.1)
-    tzinfo (1.2.5)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     uglifier (4.1.19)
       execjs (>= 0.3.0, < 3)