diff --git a/after/syntax/css/text-4.vim b/after/syntax/css/text-4.vim
index df3d9bf..062b8eb 100644
--- a/after/syntax/css/text-4.vim
+++ b/after/syntax/css/text-4.vim
@@ -3,6 +3,7 @@ syn match cssTextProp contained "\<text-\(wrap\|spacing\|group-align\)\>"
 syn match cssTextProp contained "\<wrap-\(before\|after\|inside\)\>"
 syn match cssTextProp contained "\<hyphenate-\(character\|limit-\(zone\|chars\|lines\|last\)\)\>"
 syn match cssTextProp contained "\<line-padding\>"
+syn match cssTextProp contained "\<word-boundary-\(detection\|expansion\)\>"
 syn keyword cssTextAttr contained spread punctuation
 syn match cssTextAttr contained "\<preserve-\(breaks\|spaces\)\>"
 syn match cssTextAttr contained "\<trim-inner\>"
@@ -14,3 +15,4 @@ syn match cssTextAttr contained "\<\(trim\|space\)-\(start\|end\|adjacent\)\>"
 syn match cssTextAttr contained "\<space-first\>"
 syn match cssTextAttr contained "\<no-compress\>"
 syn match cssTextAttr contained "\<ideograph-\(alpha\|numeric\)\>"
+syn match cssTextAttr contained "\<ideographic-space\>"
diff --git a/test/test.css b/test/test.css
index b1b7440..275aee6 100644
--- a/test/test.css
+++ b/test/test.css
@@ -1074,6 +1074,8 @@ view {
 	text-group-align: auto;
 	line-padding: auto;
 	text-spacing: auto;
+	word-boundary-detection: auto;
+	word-boundary-expansion: auto;
 	display: preserve-breaks;
 	display: preserve-spaces;
 	display: trim-inner;
@@ -1095,6 +1097,7 @@ view {
 	display: ideograph-alpha;
 	display: ideograph-numeric;
 	display: punctuation;
+	display: ideographic-space;
 }
 
 .text-decor-3 {