diff --git a/Gemfile.lock b/Gemfile.lock
index dc159de4..3ea66848 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -139,7 +139,9 @@ GEM
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)
-    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)
@@ -225,7 +227,7 @@ GEM
     ruby-graphviz (1.2.4)
     ruby-progressbar (1.10.0)
     ruby_dep (1.5.0)
-    rubyzip (1.2.2)
+    rubyzip (1.3.0)
     sass (3.7.2)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)