diff --git a/Gemfile.lock b/Gemfile.lock
index d114aef..711a028 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -46,15 +46,15 @@ GEM
     awesome_nested_set (3.0.2)
       activerecord (>= 4.0.0, < 5)
     bcrypt (3.1.13)
-    better_errors (2.1.1)
+    better_errors (2.8.0)
       coderay (>= 1.0.0)
-      erubis (>= 2.6.6)
+      erubi (>= 1.0.0)
       rack (>= 0.9.0)
     bootstrap-sass (3.3.4.1)
       autoprefixer-rails (>= 5.0.0.1)
       sass (>= 3.2.19)
     builder (3.2.4)
-    coderay (1.1.0)
+    coderay (1.1.3)
     coffee-rails (4.1.0)
       coffee-script (>= 2.2.0)
       railties (>= 4.0.0, < 5.0)
@@ -70,6 +70,7 @@ GEM
       railties (>= 4.1.0)
       responders
       warden (~> 1.2.3)
+    erubi (1.10.0)
     erubis (2.7.0)
     execjs (2.5.2)
     ffi (1.12.2)