diff --git a/Gemfile.lock b/Gemfile.lock
index 734178d..eb0037c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -46,7 +46,7 @@ GEM
     autoprefixer-rails (8.1.0.1)
       execjs
     bcrypt (3.1.11)
-    better_errors (2.4.0)
+    better_errors (2.8.0)
       coderay (>= 1.0.0)
       erubi (>= 1.0.0)
       rack (>= 0.9.0)
@@ -71,7 +71,7 @@ GEM
     chromedriver-helper (1.2.0)
       archive-zip (~> 0.10)
       nokogiri (~> 1.8)
-    coderay (1.1.2)
+    coderay (1.1.3)
     coffee-rails (4.2.2)
       coffee-script (>= 2.2.0)
       railties (>= 4.0.0)
@@ -90,7 +90,7 @@ GEM
       responders
       warden (~> 1.2.3)
     diff-lcs (1.3)
-    erubi (1.7.1)
+    erubi (1.10.0)
     erubis (2.7.0)
     execjs (2.7.0)
     factory_girl (4.9.0)
@@ -154,7 +154,7 @@ GEM
       method_source (~> 0.9.0)
     public_suffix (3.0.2)
     puma (3.11.3)
-    rack (2.0.4)
+    rack (2.2.3)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (5.0.6)