diff --git a/Static-filter-syntax.md b/Static-filter-syntax.md
index 87999a6..16ebf1a 100644
--- a/Static-filter-syntax.md
+++ b/Static-filter-syntax.md
@@ -406,7 +406,7 @@ Related issue: [#803](https://github.com/uBlockOrigin/uBlock-issues/issues/803).
 
 #### Procedural cosmetic filters
 
-`:has(...)`, `:has-text(...)`, `:if(...)`, `:if-not(...)`, `:matches-css(...)`, `:matches-css-before(...)`, `:matches-css-after(...)`, `:min-text-length(n)`, `:not(...)`, `:nth-ancestor(n)`, `:watch-attr(...)`, `:xpath(...)`.
+`:has(...)`, `:has-text(...)`, `:if(...)`, `:if-not(...)`, `:matches-css(...)`, `:matches-css-before(...)`, `:matches-css-after(...)`, `:min-text-length(n)`, `:not(...)`, `:nth-ancestor(n)`, `:upward(arg)`, `:watch-attr(...)`, `:xpath(...)`.
 
 See [detailed documentation](./Procedural-cosmetic-filters).