diff --git a/Gemfile.lock b/Gemfile.lock
index 4d0f7b9..aec8242 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -73,7 +73,9 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (0.9.2)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_magick (4.9.5)
     mini_mime (1.0.1)
     mini_portile2 (2.4.0)
@@ -88,7 +90,7 @@ GEM
     parser (2.6.3.0)
       ast (~> 2.4.0)
     psych (3.1.0)
-    rack (2.2.3)
+    rack (2.2.6.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.3)