diff --git a/Gemfile.lock b/Gemfile.lock
index 8fd3782..057abb2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -48,7 +48,7 @@ GEM
     babel-transpiler (0.7.0)
       babel-source (>= 4.0, < 6)
       execjs (~> 2.0)
-    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
       activesupport (>= 4.0.0)
       mime-types (>= 1.16)
     chunky_png (1.3.10)
-    coderay (1.1.2)
+    coderay (1.1.3)
     coffee-rails (4.2.2)
       coffee-script (>= 2.2.0)
       railties (>= 4.0.0)
@@ -108,7 +108,7 @@ GEM
     diff-lcs (1.3)
     domain_name (0.5.20170404)
       unf (>= 0.0.5, < 1.0.0)
-    erubi (1.7.0)
+    erubi (1.10.0)
     erubis (2.7.0)
     excon (0.72.0)
     execjs (2.7.0)
@@ -419,7 +419,7 @@ GEM
       pry (>= 0.10.4)
     public_suffix (3.0.2)
     puma (3.12.4)
-    rack (2.2.2)
+    rack (2.2.3)
     rack-cors (1.0.5)
       rack (>= 1.6.0)
     rack-mobile-detect (0.4.0)