diff --git a/README.md b/README.md
index 6d5c39f..141d82b 100644
--- a/README.md
+++ b/README.md
@@ -4,24 +4,24 @@ ESQuery is a library for querying the AST output by Esprima for patterns of synt
 
 The following selectors are supported:
 * AST node type: `ForStatement`
-* [wildcard](http://dev.w3.org/csswg/selectors4/#universal-selector): `*`
-* [attribute existence](http://dev.w3.org/csswg/selectors4/#attribute-selectors): `[attr]`
-* [attribute value](http://dev.w3.org/csswg/selectors4/#attribute-selectors): `[attr="foo"]` or `[attr=123]`
+* [wildcard](http://dev.w3.org/csswg/selectors-4/#universal-selector): `*`
+* [attribute existence](http://dev.w3.org/csswg/selectors-4/#attribute-selectors): `[attr]`
+* [attribute value](http://dev.w3.org/csswg/selectors-4/#attribute-selectors): `[attr="foo"]` or `[attr=123]`
 * attribute regex: `[attr=/foo.*/]` or (with flags) `[attr=/foo.*/is]`
 * attribute conditions: `[attr!="foo"]`, `[attr>2]`, `[attr<3]`, `[attr>=2]`, or `[attr<=3]`
 * nested attribute: `[attr.level2="foo"]`
 * field: `FunctionDeclaration > Identifier.id`
-* [First](http://dev.w3.org/csswg/selectors4/#the-first-child-pseudo) or [last](http://dev.w3.org/csswg/selectors4/#the-last-child-pseudo) child: `:first-child` or `:last-child`
-* [nth-child](http://dev.w3.org/csswg/selectors4/#the-nth-child-pseudo) (no ax+b support): `:nth-child(2)`
-* [nth-last-child](http://dev.w3.org/csswg/selectors4/#the-nth-last-child-pseudo) (no ax+b support): `:nth-last-child(1)`
-* [descendant](http://dev.w3.org/csswg/selectors4/#descendant-combinators): `ancestor descendant`
-* [child](http://dev.w3.org/csswg/selectors4/#child-combinators): `parent > child`
-* [following sibling](http://dev.w3.org/csswg/selectors4/#general-sibling-combinators): `node ~ sibling`
-* [adjacent sibling](http://dev.w3.org/csswg/selectors4/#adjacent-sibling-combinators): `node + adjacent`
-* [negation](http://dev.w3.org/csswg/selectors4/#negation-pseudo): `:not(ForStatement)`
+* [First](http://dev.w3.org/csswg/selectors-4/#the-first-child-pseudo) or [last](http://dev.w3.org/csswg/selectors-4/#the-last-child-pseudo) child: `:first-child` or `:last-child`
+* [nth-child](http://dev.w3.org/csswg/selectors-4/#the-nth-child-pseudo) (no ax+b support): `:nth-child(2)`
+* [nth-last-child](http://dev.w3.org/csswg/selectors-4/#the-nth-last-child-pseudo) (no ax+b support): `:nth-last-child(1)`
+* [descendant](http://dev.w3.org/csswg/selectors-4/#descendant-combinators): `ancestor descendant`
+* [child](http://dev.w3.org/csswg/selectors-4/#child-combinators): `parent > child`
+* [following sibling](http://dev.w3.org/csswg/selectors-4/#general-sibling-combinators): `node ~ sibling`
+* [adjacent sibling](http://dev.w3.org/csswg/selectors-4/#adjacent-sibling-combinators): `node + adjacent`
+* [negation](http://dev.w3.org/csswg/selectors-4/#negation-pseudo): `:not(ForStatement)`
 * [has](https://drafts.csswg.org/selectors-4/#has-pseudo): `:has(ForStatement)`, `:has(> ForStatement)`
-* [matches-any](http://dev.w3.org/csswg/selectors4/#matches): `:is([attr] > :first-child, :last-child)`
-* [subject indicator](http://dev.w3.org/csswg/selectors4/#subject): `!IfStatement > [name="foo"]`
+* [matches-any](http://dev.w3.org/csswg/selectors-4/#matches): `:is([attr] > :first-child, :last-child)`
+* [subject indicator](https://www.w3.org/TR/2013/WD-selectors4-20130502/#subject): `!IfStatement > [name="foo"]`
 * class of AST node: `:statement`, `:expression`, `:declaration`, `:function`, or `:pattern`
 
 [![Build Status](https://travis-ci.org/estools/esquery.png?branch=master)](https://travis-ci.org/estools/esquery)