diff --git a/web/Gemfile b/web/Gemfile
index 7b3be00..334f2a9 100644
--- a/web/Gemfile
+++ b/web/Gemfile
@@ -20,7 +20,7 @@ gem 'bio', '~> 1.4.2'
 
 # development
 gem 'shotgun', '~> 0.9'
-gem 'better_errors', '~> 0.9.0'
+gem 'better_errors', '~> 2.8.0'
 gem 'binding_of_caller', '~> 0.7.2'
 
 gem 'therubyracer', '~> 0.12.0'
diff --git a/web/Gemfile.lock b/web/Gemfile.lock
index 59e2d69..b49f6a1 100644
--- a/web/Gemfile.lock
+++ b/web/Gemfile.lock
@@ -2,19 +2,20 @@ GEM
   remote: https://rubygems.org/
   specs:
     backports (3.11.4)
-    better_errors (0.9.0)
+    better_errors (2.8.0)
       coderay (>= 1.0.0)
-      erubis (>= 2.6.6)
+      erubi (>= 1.0.0)
+      rack (>= 0.9.0)
     binding_of_caller (0.7.3)
       debug_inspector (>= 0.0.1)
     bio (1.4.3.0001)
-    coderay (1.1.2)
+    coderay (1.1.3)
     coffee-script (2.2.0)
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
     debug_inspector (0.0.3)
-    erubis (2.7.0)
+    erubi (1.10.0)
     eventmachine (1.0.9.1)
     execjs (2.7.0)
     haml (3.1.8)
@@ -62,7 +63,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  better_errors (~> 0.9.0)
+  better_errors (~> 2.8.0)
   binding_of_caller (~> 0.7.2)
   bio (~> 1.4.2)
   coffee-script (~> 2.2.0)