diff --git a/components/prism-css-extras.js b/components/prism-css-extras.js
index 0ffad78c3b..e0c7ef297d 100644
--- a/components/prism-css-extras.js
+++ b/components/prism-css-extras.js
@@ -36,14 +36,20 @@ Prism.languages.css.selector = {
 				'operator': /[|~*^$]?=/
 			}
 		},
-		'n-th': {
-			pattern: /(\(\s*)[+-]?\d*[\dn](?:\s*[+-]\s*\d+)?(?=\s*\))/,
-			lookbehind: true,
-			inside: {
-				'number': /[\dn]+/,
-				'operator': /[+-]/
+		'n-th': [
+			{
+				pattern: /(\(\s*)[+-]?\d*[\dn](?:\s*[+-]\s*\d+)?(?=\s*\))/,
+				lookbehind: true,
+				inside: {
+					'number': /[\dn]+/,
+					'operator': /[+-]/
+				}
+			},
+			{
+				pattern: /(\(\s*)(?:even|odd)(?=\s*\))/i,
+				lookbehind: true
 			}
-		},
+		],
 		'punctuation': /[()]/
 	}
 };
diff --git a/components/prism-css-extras.min.js b/components/prism-css-extras.min.js
index d1cf1ee5f1..0576f5d6f0 100644
--- a/components/prism-css-extras.min.js
+++ b/components/prism-css-extras.min.js
@@ -1 +1 @@
-Prism.languages.css.selector={pattern:Prism.languages.css.selector,inside:{"pseudo-element":/:(?:after|before|first-letter|first-line|selection)|::[-\w]+/,"pseudo-class":/:[-\w]+/,class:/\.[-:.\w]+/,id:/#[-:.\w]+/,attribute:{pattern:/\[(?:[^[\]"']|("|')(?:\\(?:\r\n|[\s\S])|(?!\1)[^\\\r\n])*\1)*\]/,greedy:!0,inside:{punctuation:/^\[|\]$/,"case-sensitivity":{pattern:/(\s)[si]$/i,lookbehind:!0,alias:"keyword"},namespace:{pattern:/^(\s*)[-*\w\xA0-\uFFFF]*\|(?!=)/,lookbehind:!0,inside:{punctuation:/\|$/}},attribute:{pattern:/^(\s*)[-\w\xA0-\uFFFF]+/,lookbehind:!0},value:[/("|')(?:\\(?:\r\n|[\s\S])|(?!\1)[^\\\r\n])*\1/,{pattern:/(=\s*)[-\w\xA0-\uFFFF]+(?=\s*$)/,lookbehind:!0}],operator:/[|~*^$]?=/}},"n-th":{pattern:/(\(\s*)[+-]?\d*[\dn](?:\s*[+-]\s*\d+)?(?=\s*\))/,lookbehind:!0,inside:{number:/[\dn]+/,operator:/[+-]/}},punctuation:/[()]/}},Prism.languages.insertBefore("css","property",{variable:{pattern:/(^|[^-\w\xA0-\uFFFF])--[-_a-z\xA0-\uFFFF][-\w\xA0-\uFFFF]*/i,lookbehind:!0}}),Prism.languages.insertBefore("css","function",{operator:{pattern:/(\s)[+\-*\/](?=\s)/,lookbehind:!0},hexcode:/#[\da-f]{3,8}/i,entity:/\\[\da-f]{1,8}/i,unit:{pattern:/(\d)(?:%|[a-z]+)/,lookbehind:!0},number:/-?[\d.]+/});
\ No newline at end of file
+Prism.languages.css.selector={pattern:Prism.languages.css.selector,inside:{"pseudo-element":/:(?:after|before|first-letter|first-line|selection)|::[-\w]+/,"pseudo-class":/:[-\w]+/,class:/\.[-:.\w]+/,id:/#[-:.\w]+/,attribute:{pattern:/\[(?:[^[\]"']|("|')(?:\\(?:\r\n|[\s\S])|(?!\1)[^\\\r\n])*\1)*\]/,greedy:!0,inside:{punctuation:/^\[|\]$/,"case-sensitivity":{pattern:/(\s)[si]$/i,lookbehind:!0,alias:"keyword"},namespace:{pattern:/^(\s*)[-*\w\xA0-\uFFFF]*\|(?!=)/,lookbehind:!0,inside:{punctuation:/\|$/}},attribute:{pattern:/^(\s*)[-\w\xA0-\uFFFF]+/,lookbehind:!0},value:[/("|')(?:\\(?:\r\n|[\s\S])|(?!\1)[^\\\r\n])*\1/,{pattern:/(=\s*)[-\w\xA0-\uFFFF]+(?=\s*$)/,lookbehind:!0}],operator:/[|~*^$]?=/}},"n-th":[{pattern:/(\(\s*)[+-]?\d*[\dn](?:\s*[+-]\s*\d+)?(?=\s*\))/,lookbehind:!0,inside:{number:/[\dn]+/,operator:/[+-]/}},{pattern:/(\(\s*)(?:even|odd)(?=\s*\))/i,lookbehind:!0}],punctuation:/[()]/}},Prism.languages.insertBefore("css","property",{variable:{pattern:/(^|[^-\w\xA0-\uFFFF])--[-_a-z\xA0-\uFFFF][-\w\xA0-\uFFFF]*/i,lookbehind:!0}}),Prism.languages.insertBefore("css","function",{operator:{pattern:/(\s)[+\-*\/](?=\s)/,lookbehind:!0},hexcode:/#[\da-f]{3,8}/i,entity:/\\[\da-f]{1,8}/i,unit:{pattern:/(\d)(?:%|[a-z]+)/,lookbehind:!0},number:/-?[\d.]+/});
\ No newline at end of file
diff --git a/tests/languages/css!+css-extras/selector_n-th_feature.test b/tests/languages/css!+css-extras/selector_n-th_feature.test
index 0e9dc7b6c2..64e5aa7bb5 100644
--- a/tests/languages/css!+css-extras/selector_n-th_feature.test
+++ b/tests/languages/css!+css-extras/selector_n-th_feature.test
@@ -2,6 +2,8 @@
 :nth-child(+2n - 1) {}
 :nth-child(2n) {}
 :nth-child(+5) {}
+:nth-child(even) {}
+:nth-child(odd) {}
 
 ----------------------------------------------------
 
@@ -54,6 +56,24 @@
 		["punctuation", ")"]
 	]],
 	["punctuation", "{"],
+	["punctuation", "}"],
+
+	["selector", [
+		["pseudo-class", ":nth-child"],
+		["punctuation", "("],
+		["n-th", "even"],
+		["punctuation", ")"]
+	]],
+	["punctuation", "{"],
+	["punctuation", "}"],
+
+	["selector", [
+		["pseudo-class", ":nth-child"],
+		["punctuation", "("],
+		["n-th", "odd"],
+		["punctuation", ")"]
+	]],
+	["punctuation", "{"],
 	["punctuation", "}"]
 ]