diff --git a/Gemfile.lock b/Gemfile.lock
index 593f8f6..3c8c912 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -67,7 +67,7 @@ GEM
     aws-sigv4 (1.1.0)
       aws-eventstream (~> 1.0, >= 1.0.2)
     bcrypt (3.1.13)
-    better_errors (2.5.1)
+    better_errors (2.8.0)
       coderay (>= 1.0.0)
       erubi (>= 1.0.0)
       rack (>= 0.9.0)
@@ -90,7 +90,7 @@ GEM
     chromedriver-helper (2.1.1)
       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)
@@ -102,7 +102,7 @@ GEM
     crass (1.0.5)
     debug_inspector (0.0.3)
     duktape (2.3.0.0)
-    erubi (1.9.0)
+    erubi (1.10.0)
     execjs (2.7.0)
     ffi (1.11.3)
     globalid (0.4.2)
@@ -141,7 +141,7 @@ GEM
       pry (>= 0.10.4)
     public_suffix (4.0.1)
     puma (3.12.2)
-    rack (2.0.8)
+    rack (2.2.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.4)