diff --git a/lexers/yaml.go b/lexers/yaml.go
index 5066374..52e6e3a 100644
--- a/lexers/yaml.go
+++ b/lexers/yaml.go
@@ -4,51 +4,6 @@ import (
 	. "github.com/alecthomas/chroma" // nolint
 )
 
-// Prism.languages.yaml = {
-// 	'scalar': {
-// 		pattern: /([\-:]\s*(![^\s]+)?[ \t]*[|>])[ \t]*(?:((?:\r?\n|\r)[ \t]+)[^\r\n]+(?:\3[^\r\n]+)*)/,
-// 		lookbehind: true,
-// 		alias: 'string'
-// 	},
-// 	'comment': /#.*/,
-// 	'key': {
-// 		pattern: /(\s*(?:^|[:\-,[{\r\n?])[ \t]*(![^\s]+)?[ \t]*)[^\r\n{[\]},#\s]+?(?=\s*:\s)/,
-// 		lookbehind: true,
-// 		alias: 'atrule'
-// 	},
-// 	'directive': {
-// 		pattern: /(^[ \t]*)%.+/m,
-// 		lookbehind: true,
-// 		alias: 'important'
-// 	},
-// 	'datetime': {
-// 		pattern: /([:\-,[{]\s*(![^\s]+)?[ \t]*)(\d{4}-\d\d?-\d\d?([tT]|[ \t]+)\d\d?:\d{2}:\d{2}(\.\d*)?[ \t]*(Z|[-+]\d\d?(:\d{2})?)?|\d{4}-\d{2}-\d{2}|\d\d?:\d{2}(:\d{2}(\.\d*)?)?)(?=[ \t]*($|,|]|}))/m,
-// 		lookbehind: true,
-// 		alias: 'number'
-// 	},
-// 	'boolean': {
-// 		pattern: /([:\-,[{]\s*(![^\s]+)?[ \t]*)(true|false)[ \t]*(?=$|,|]|})/im,
-// 		lookbehind: true,
-// 		alias: 'important'
-// 	},
-// 	'null': {
-// 		pattern: /([:\-,[{]\s*(![^\s]+)?[ \t]*)(null|~)[ \t]*(?=$|,|]|})/im,
-// 		lookbehind: true,
-// 		alias: 'important'
-// 	},
-// 	'string': {
-// 		pattern: /([:\-,[{]\s*(![^\s]+)?[ \t]*)("(?:[^"\\]|\\.)*"|'(?:[^'\\]|\\.)*')(?=[ \t]*($|,|]|}))/m,
-// 		lookbehind: true,
-// 		greedy: true
-// 	},
-// 	'number': {
-// 		pattern: /([:\-,[{]\s*(![^\s]+)?[ \t]*)[+\-]?(0x[\da-f]+|0o[0-7]+|(\d+\.?\d*|\.?\d+)(e[\+\-]?\d+)?|\.inf|\.nan)[ \t]*(?=$|,|]|})/im,
-// 		lookbehind: true
-// 	},
-// 	'tag': /![^\s]+/,
-// 	'important': /[&*][\w]+/,
-// 	'punctuation': /---|[:[\]{}\-,|>?]|\.\.\./
-
 var YAML = Register(MustNewLexer(
 	&Config{
 		Name:      "YAML",