diff --git a/packages/block-library/src/post-author-name/block.json b/packages/block-library/src/post-author-name/block.json
index 2e970165c368f9..34cf8886e9f032 100644
--- a/packages/block-library/src/post-author-name/block.json
+++ b/packages/block-library/src/post-author-name/block.json
@@ -43,7 +43,11 @@
 			"__experimentalFontWeight": true,
 			"__experimentalFontStyle": true,
 			"__experimentalTextTransform": true,
-			"__experimentalLetterSpacing": true
+			"__experimentalTextDecoration": true,
+			"__experimentalLetterSpacing": true,
+			"__experimentalDefaultControls": {
+				"fontSize": true
+			}
 		}
 	}
 }