diff --git a/Gemfile.lock b/Gemfile.lock
index ab09278c..99e7f527 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -63,7 +63,7 @@ GEM
     autoprefixer-rails (8.6.2)
       execjs
     bcrypt (3.1.12)
-    better_errors (2.4.0)
+    better_errors (2.9.1)
       coderay (>= 1.0.0)
       erubi (>= 1.0.0)
       rack (>= 0.9.0)
@@ -88,7 +88,7 @@ GEM
       capybara (>= 1.0, < 4)
       launchy
     cliver (0.3.2)
-    coderay (1.1.2)
+    coderay (1.1.3)
     coffee-rails (4.2.2)
       coffee-script (>= 2.2.0)
       railties (>= 4.0.0)
@@ -108,7 +108,7 @@ GEM
       multi_json
     domain_name (0.5.20180417)
       unf (>= 0.0.5, < 1.0.0)
-    erubi (1.7.1)
+    erubi (1.10.0)
     excon (0.62.0)
     execjs (2.7.0)
     factory_bot (4.10.0)
@@ -155,7 +155,9 @@ GEM
     mime-types (3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
-    mimemagic (0.3.2)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.0)
     mini_portile2 (2.3.0)
     mini_racer (0.1.15)
@@ -175,7 +177,7 @@ GEM
     psych (3.0.2)
     public_suffix (3.0.2)
     puma (3.11.4)
-    rack (2.0.5)
+    rack (2.2.3)
     rack-test (1.0.0)
       rack (>= 1.0, < 3)
     rails (5.2.0)