diff --git a/Gemfile.lock b/Gemfile.lock
index d2bf664..0545c6b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -250,7 +250,7 @@ GEM
     kaminari-core (1.2.1)
     launchy (2.4.3)
       addressable (~> 2.3)
-    libv8 (7.3.492.27.1)
+    libv8-node (15.14.0.0)
     listen (3.1.5)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
@@ -269,11 +269,13 @@ GEM
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)
-    mimemagic (0.3.4)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
-    mini_racer (0.2.9)
-      libv8 (>= 6.9.411)
+    mini_racer (0.4.0)
+      libv8-node (~> 15.14.0.0)
     minitest (5.14.1)
     momentjs-rails (2.20.1)
       railties (>= 3.1)