diff --git a/packages/blocks/src/api/raw-handling/phrasing-content.js b/packages/blocks/src/api/raw-handling/phrasing-content.js
index 1b56c1a7b10839..f9274af7832f1b 100644
--- a/packages/blocks/src/api/raw-handling/phrasing-content.js
+++ b/packages/blocks/src/api/raw-handling/phrasing-content.js
@@ -74,17 +74,6 @@ const embeddedContentSchema = {
 	},
 	canvas: { attributes: [ 'width', 'height' ] },
 	embed: { attributes: [ 'src', 'type', 'width', 'height' ] },
-	iframe: {
-		attributes: [
-			'src',
-			'srcdoc',
-			'name',
-			'sandbox',
-			'seamless',
-			'width',
-			'height',
-		],
-	},
 	img: {
 		attributes: [
 			'alt',