diff --git a/2013-JAX/Gemfile b/2013-JAX/Gemfile
index aa8531f..356d84d 100644
--- a/2013-JAX/Gemfile
+++ b/2013-JAX/Gemfile
@@ -2,7 +2,7 @@ source 'https://rubygems.org'
 
 gem 'awestruct', '~> 0.5.1'
 gem 'tilt', '~> 1.3.6', :require => ['asciidoctor']
-gem 'redcarpet', '~> 2.3.0'
+gem 'redcarpet', '~> 3.5.1'
 gem 'slim', '~> 2.0.0'
 gem 'less', '~> 2.3.1'
 gem 'therubyracer', '~> 0.11.4'
diff --git a/2013-JAX/Gemfile.lock b/2013-JAX/Gemfile.lock
index 2e91c1d..d55dd52 100644
--- a/2013-JAX/Gemfile.lock
+++ b/2013-JAX/Gemfile.lock
@@ -80,7 +80,7 @@ GEM
     rack (1.5.2)
     rb-inotify (0.9.0)
       ffi (>= 0.5.0)
-    redcarpet (2.3.0)
+    redcarpet (3.5.1)
     ref (1.0.4)
     rest-client (1.6.7)
       mime-types (>= 1.16)
@@ -117,7 +117,7 @@ DEPENDENCIES
   less (~> 2.3.1)
   puma (~> 1.6.3)
   rb-inotify (~> 0.9.0)
-  redcarpet (~> 2.3.0)
+  redcarpet (~> 3.5.1)
   slim (~> 2.0.0)
   therubyracer (~> 0.11.4)
   tilt (~> 1.3.6)