diff --git a/packages/block-library/src/query-title/block.json b/packages/block-library/src/query-title/block.json
index 318643bae3005..33df75866bce0 100644
--- a/packages/block-library/src/query-title/block.json
+++ b/packages/block-library/src/query-title/block.json
@@ -48,6 +48,7 @@
 			"__experimentalFontWeight": true,
 			"__experimentalLetterSpacing": true,
 			"__experimentalTextTransform": true,
+			"__experimentalTextDecoration": true,
 			"__experimentalDefaultControls": {
 				"fontSize": true,
 				"fontAppearance": true,