diff --git a/Gemfile.lock b/Gemfile.lock
index 545bcf2..0ad3617 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -186,7 +186,9 @@ GEM
       mimemagic (~> 0.3.2)
     method_source (0.9.2)
     middleware (0.1.0)
-    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)
@@ -289,7 +291,7 @@ GEM
     rspec-support (3.8.0)
     ruby2_keywords (0.0.5)
     ruby_dep (1.5.0)
-    rubyzip (1.2.2)
+    rubyzip (1.3.0)
     sass (3.7.3)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)