diff --git a/Gemfile.lock b/Gemfile.lock
index 21d6dd9..a5c7e57 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -43,9 +43,9 @@ GEM
       json
     awesome_print (1.6.1)
     bcrypt (3.1.10)
-    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)
     binding_of_caller (0.7.2)
       debug_inspector (>= 0.0.1)
@@ -63,7 +63,7 @@ GEM
       xpath (~> 2.0)
     childprocess (0.8.0)
       ffi (~> 1.0, >= 1.0.11)
-    coderay (1.1.0)
+    coderay (1.1.3)
     coffee-rails (4.0.1)
       coffee-script (>= 2.2.0)
       railties (>= 4.0.0, < 5.0)
@@ -82,6 +82,7 @@ GEM
       thread_safe (~> 0.1)
       warden (~> 1.2.3)
     diff-lcs (1.2.5)
+    erubi (1.10.0)
     erubis (2.7.0)
     eventmachine (1.0.9.1)
     execjs (2.6.0)
@@ -130,7 +131,7 @@ GEM
     puma (3.12.4)
     quiet_assets (1.1.0)
       railties (>= 3.1, < 5.0)
-    rack (1.6.4)
+    rack (1.6.13)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (4.2.5.1)