diff --git a/packages/block-library/src/comment-date/block.json b/packages/block-library/src/comment-date/block.json
index eaf10140148dc3..7a007479ba3128 100644
--- a/packages/block-library/src/comment-date/block.json
+++ b/packages/block-library/src/comment-date/block.json
@@ -35,6 +35,7 @@
 			"__experimentalFontWeight": true,
 			"__experimentalFontStyle": true,
 			"__experimentalTextTransform": true,
+			"__experimentalTextDecoration": true,
 			"__experimentalLetterSpacing": true,
 			"__experimentalDefaultControls": {
 				"fontSize": true