diff --git a/Gemfile.lock b/Gemfile.lock
index c55d69b..f529493 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -67,9 +67,9 @@ GEM
     autoprefixer-rails (6.4.1)
       execjs
     bcrypt (3.1.11)
-    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)
     builder (3.2.2)
     byebug (9.0.5)
@@ -80,7 +80,7 @@ GEM
       cells (~> 4.0)
       erbse (>= 0.0.2)
     chronic (0.10.2)
-    coderay (1.1.1)
+    coderay (1.1.3)
     coffee-rails (4.2.1)
       coffee-script (>= 2.2.0)
       railties (>= 4.0.0, < 5.2.x)
@@ -92,6 +92,7 @@ GEM
     concurrent-ruby (1.0.2)
     debug_inspector (0.0.2)
     erbse (0.0.2)
+    erubi (1.10.0)
     erubis (2.7.0)
     execjs (2.7.0)
     faker (1.6.6)
@@ -143,7 +144,7 @@ GEM
     polyamorous (1.3.1)
       activerecord (>= 3.0)
     puma (3.6.0)
-    rack (2.0.1)
+    rack (2.2.3)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (5.0.0.1)