diff --git a/.changeset/nice-ligers-type.md b/.changeset/nice-ligers-type.md
new file mode 100644
index 0000000000..b0410b1cc2
--- /dev/null
+++ b/.changeset/nice-ligers-type.md
@@ -0,0 +1,5 @@
+---
+"stylelint": patch
+---
+
+Fixed: `at-rule-no-unknown` false positives for `@scroll-timeline`
diff --git a/lib/reference/atKeywords.js b/lib/reference/atKeywords.js
index 40fecce563..5773d14ea1 100644
--- a/lib/reference/atKeywords.js
+++ b/lib/reference/atKeywords.js
@@ -44,6 +44,7 @@ const atKeywords = uniteSets(pageMarginAtKeywords, [
 	'ornaments',
 	'page',
 	'property',
+	'scroll-timeline',
 	'styleset',
 	'stylistic',
 	'supports',
diff --git a/lib/rules/at-rule-no-unknown/__tests__/index.js b/lib/rules/at-rule-no-unknown/__tests__/index.js
index 3639493d05..abc72bcf37 100644
--- a/lib/rules/at-rule-no-unknown/__tests__/index.js
+++ b/lib/rules/at-rule-no-unknown/__tests__/index.js
@@ -91,6 +91,9 @@ testRule({
 		{
 			code: '@layer framework { h1 { background: white; } }',
 		},
+		{
+			code: '@scroll-timeline foo {}',
+		},
 	],
 
 	reject: [