diff --git a/Gemfile b/Gemfile
index 851fabc2..3df9dcfc 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,2 +1,7 @@
 source 'https://rubygems.org'
 gemspec
+
+if RUBY_VERSION < "1.9.3"
+  # escape_utils 1.0.0 requires 1.9.3 and above
+  gem "escape_utils", "0.3.2"
+end
diff --git a/Rakefile b/Rakefile
index 08ce419b..0b3d16a4 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,5 +1,7 @@
 require 'rake/clean'
 require 'rake/testtask'
+require 'yaml'
+require 'json'
 
 task :default => :test
 
@@ -13,6 +15,13 @@ task :samples do
   File.open('lib/linguist/samples.json', 'w') { |io| io.write json }
 end
 
+task :build_gem do
+  languages = YAML.load_file("lib/linguist/languages.yml")
+  File.write("lib/linguist/languages.json", JSON.dump(languages))
+  `gem build github-linguist.gemspec`
+  File.delete("lib/linguist/languages.json")
+end
+
 namespace :classifier do
   LIMIT = 1_000
 
diff --git a/github-linguist.gemspec b/github-linguist.gemspec
index 33d9fed1..26bded1b 100644
--- a/github-linguist.gemspec
+++ b/github-linguist.gemspec
@@ -1,6 +1,6 @@
 Gem::Specification.new do |s|
   s.name    = 'github-linguist'
-  s.version = '2.9.8'
+  s.version = '2.10.0'
   s.summary = "GitHub Language detection"
 
   s.authors  = "GitHub"
@@ -10,10 +10,10 @@ Gem::Specification.new do |s|
   s.executables << 'linguist'
 
   s.add_dependency 'charlock_holmes', '~> 0.6.6'
-  s.add_dependency 'escape_utils',    '~> 0.3.1'
+  s.add_dependency 'escape_utils',    '>= 0.3.1'
   s.add_dependency 'mime-types',      '~> 1.19'
-  s.add_dependency 'pygments.rb',     '~> 0.5.2'
-  
+  s.add_dependency 'pygments.rb',     '~> 0.5.4'
+
   s.add_development_dependency 'json'
   s.add_development_dependency 'mocha'
   s.add_development_dependency 'rake'
diff --git a/lib/linguist/language.rb b/lib/linguist/language.rb
index a8dc8f9f..69d20bc0 100644
--- a/lib/linguist/language.rb
+++ b/lib/linguist/language.rb
@@ -1,6 +1,10 @@
 require 'escape_utils'
 require 'pygments'
 require 'yaml'
+begin
+  require 'json'
+rescue LoadError
+end
 
 require 'linguist/classifier'
 require 'linguist/samples'
@@ -455,7 +459,16 @@ module Linguist
   filenames = Samples::DATA['filenames']
   popular = YAML.load_file(File.expand_path("../popular.yml", __FILE__))
 
-  YAML.load_file(File.expand_path("../languages.yml", __FILE__)).each do |name, options|
+  languages_yml = File.expand_path("../languages.yml", __FILE__)
+  languages_json = File.expand_path("../languages.json", __FILE__)
+
+  if File.exist?(languages_json) && defined?(JSON)
+    languages = JSON.load(File.read(languages_json))
+  else
+    languages = YAML.load_file(languages_yml)
+  end
+
+  languages.each do |name, options|
     options['extensions'] ||= []
     options['filenames'] ||= []
 
diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index c963d2cd..ea20d55b 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -70,6 +70,7 @@ Ada:
 
 Agda:
   type: programming
+  color: "#467C91"
   primary_extension: .agda
 
 ApacheConf:
@@ -384,7 +385,7 @@ D-ObjDump:
 DM:
   type: programming
   color: "#075ff1"
-  lexer: Text only
+  lexer: C++
   primary_extension: .dm
   aliases:
   - byond
@@ -752,6 +753,8 @@ JSON:
   - .sublime_session
   - .sublime-settings
   - .sublime-workspace
+  filenames:
+  - composer.lock
 
 Jade:
   group: HTML
@@ -947,15 +950,17 @@ Matlab:
 Max:
   type: programming
   color: "#ce279c"
-  lexer: Text only
+  lexer: JSON
   aliases:
   - max/msp
   - maxmsp
   search_term: max/msp
-  primary_extension: .mxt
+  primary_extension: .maxpat
   extensions:
   - .maxhelp
-  - .maxpat
+  - .maxproj
+  - .mxt
+  - .pat
 
 MiniD: # Legacy
   searchable: false
@@ -1478,6 +1483,7 @@ Tcsh:
 
 TeX:
   type: markup
+  color: "#3D6117"
   ace_mode: latex
   aliases:
   - latex
@@ -1545,6 +1551,14 @@ VHDL:
   lexer: vhdl
   color: "#543978"
   primary_extension: .vhdl
+  extensions:
+  - .vhd
+  - .vhf
+  - .vhi
+  - .vho
+  - .vhs
+  - .vht
+  - .vhw
 
 Vala:
   type: programming
@@ -1616,6 +1630,7 @@ XML:
   - .grxml
   - .jelly
   - .kml
+  - .launch
   - .mxml
   - .plist
   - .pluginspec
@@ -1625,6 +1640,7 @@ XML:
   - .rdf
   - .rss
   - .scxml
+  - .srdf
   - .svg
   - .tmCommand
   - .tmLanguage
@@ -1633,12 +1649,14 @@ XML:
   - .tmTheme
   - .tml
   - .ui
+  - .urdf
   - .vxml
   - .wsdl
   - .wxi
   - .wxl
   - .wxs
   - .x3d
+  - .xacro
   - .xaml
   - .xlf
   - .xliff
@@ -1691,6 +1709,7 @@ YAML:
   primary_extension: .yml
   extensions:
   - .reek
+  - .rviz
   - .yaml
 
 eC:
diff --git a/lib/linguist/samples.json b/lib/linguist/samples.json
index 7f0f7682..1c37ea3b 100644
--- a/lib/linguist/samples.json
+++ b/lib/linguist/samples.json
@@ -152,9 +152,7 @@
       ".script!"
     ],
     "JSON": [
-      ".json",
-      ".maxhelp",
-      ".maxpat"
+      ".json"
     ],
     "Julia": [
       ".jl"
@@ -208,6 +206,8 @@
       ".m"
     ],
     "Max": [
+      ".maxhelp",
+      ".maxpat",
       ".mxt"
     ],
     "Monkey": [
@@ -23186,10 +23186,10 @@
       "logger": 2
     },
     "JSON": {
-      "{": 143,
-      "}": 143,
-      "[": 165,
-      "]": 165,
+      "{": 17,
+      "}": 17,
+      "[": 2,
+      "]": 2,
       "true": 3
     },
     "Julia": {
@@ -28521,6 +28521,10 @@
       "contents.colheaders": 1
     },
     "Max": {
+      "{": 126,
+      "}": 126,
+      "[": 163,
+      "]": 163,
       "max": 1,
       "v2": 1,
       ";": 39,
@@ -43668,7 +43672,7 @@
     "Jade": 3,
     "Java": 8987,
     "JavaScript": 76934,
-    "JSON": 619,
+    "JSON": 41,
     "Julia": 247,
     "Kotlin": 155,
     "KRL": 25,
@@ -43685,7 +43689,7 @@
     "Makefile": 50,
     "Markdown": 1,
     "Matlab": 11942,
-    "Max": 136,
+    "Max": 714,
     "Monkey": 207,
     "MoonScript": 1718,
     "Nemerle": 17,
@@ -43795,7 +43799,7 @@
     "Jade": 1,
     "Java": 6,
     "JavaScript": 20,
-    "JSON": 5,
+    "JSON": 3,
     "Julia": 1,
     "Kotlin": 1,
     "KRL": 1,
@@ -43812,7 +43816,7 @@
     "Makefile": 2,
     "Markdown": 1,
     "Matlab": 39,
-    "Max": 1,
+    "Max": 3,
     "Monkey": 1,
     "MoonScript": 1,
     "Nemerle": 1,
@@ -43877,5 +43881,5 @@
     "Xtend": 2,
     "YAML": 1
   },
-  "md5": "d77910fe214f3654d7538485c7388f89"
+  "md5": "647da23cd1eb02653f50ff9bfbb6e70d"
 }
\ No newline at end of file
diff --git a/lib/linguist/samples.rb b/lib/linguist/samples.rb
index d9099385..c623d7d5 100644
--- a/lib/linguist/samples.rb
+++ b/lib/linguist/samples.rb
@@ -1,4 +1,8 @@
-require 'yaml'
+begin
+  require 'json'
+rescue LoadError
+  require 'yaml'
+end
 
 require 'linguist/md5'
 require 'linguist/classifier'
@@ -14,7 +18,8 @@ module Linguist
 
     # Hash of serialized samples object
     if File.exist?(PATH)
-      DATA = YAML.load_file(PATH)
+      serializer = defined?(JSON) ? JSON : YAML
+      DATA = serializer.load(File.read(PATH))
     end
 
     # Public: Iterate over each sample.
diff --git a/samples/JSON/Hello.maxhelp b/samples/Max/Hello.maxhelp
similarity index 100%
rename from samples/JSON/Hello.maxhelp
rename to samples/Max/Hello.maxhelp
diff --git a/samples/JSON/Hello.maxpat b/samples/Max/Hello.maxpat
similarity index 100%
rename from samples/JSON/Hello.maxpat
rename to samples/Max/Hello.maxpat