diff --git a/.changeset/selfish-years-swim.md b/.changeset/selfish-years-swim.md
new file mode 100644
index 0000000000..3e8298e2eb
--- /dev/null
+++ b/.changeset/selfish-years-swim.md
@@ -0,0 +1,5 @@
+---
+"stylelint": patch
+---
+
+Fixed: `unit-no-unknown` false positives for `*vi` & `*vb` viewport units
diff --git a/lib/reference/units.js b/lib/reference/units.js
index 72ab5ead0d..a2cf2a1aba 100644
--- a/lib/reference/units.js
+++ b/lib/reference/units.js
@@ -17,19 +17,27 @@ const lengthUnits = new Set([
 	'ric',
 	'rlh',
 	// Viewport-percentage lengths
+	'dvb',
 	'dvh',
+	'dvi',
 	'dvmax',
 	'dvmin',
 	'dvw',
+	'lvb',
 	'lvh',
+	'lvi',
 	'lvmax',
 	'lvmin',
 	'lvw',
+	'svb',
 	'svh',
+	'svi',
 	'svmax',
 	'svmin',
 	'svw',
+	'vb',
 	'vh',
+	'vi',
 	'vw',
 	'vmin',
 	'vmax',