diff --git a/Gemfile.lock b/Gemfile.lock
index 23b2b38..a21f38d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -42,7 +42,7 @@ GEM
     awesome_print (1.8.0)
     bcrypt (3.1.12)
     benchmark-ips (2.7.2)
-    better_errors (2.5.0)
+    better_errors (2.8.0)
       coderay (>= 1.0.0)
       erubi (>= 1.0.0)
       rack (>= 0.9.0)
@@ -51,7 +51,7 @@ GEM
     builder (3.2.3)
     byebug (10.0.2)
     cancan (1.6.10)
-    coderay (1.1.2)
+    coderay (1.1.3)
     coffee-rails (4.2.2)
       coffee-script (>= 2.2.0)
       railties (>= 4.0.0)
@@ -76,7 +76,7 @@ GEM
       railties (>= 4.1.0, < 6.0)
       responders
       warden (~> 1.2.3)
-    erubi (1.7.1)
+    erubi (1.10.0)
     execjs (2.7.0)
     ffi (1.9.25)
     get_process_mem (0.2.2)
@@ -108,7 +108,7 @@ GEM
     puma (3.11.4)
     pygments.rb (1.2.1)
       multi_json (>= 1.0.0)
-    rack (2.0.5)
+    rack (2.2.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.1.6)