diff -r 48c4eec2b7e6 -r 8c2e4d02f4ef wp/wp-includes/blocks/separator/block.json
--- a/wp/wp-includes/blocks/separator/block.json	Fri Sep 05 18:40:08 2025 +0200
+++ b/wp/wp-includes/blocks/separator/block.json	Fri Sep 05 18:52:52 2025 +0200
@@ -11,6 +11,11 @@
 		"opacity": {
 			"type": "string",
 			"default": "alpha-channel"
+		},
+		"tagName": {
+			"type": "string",
+			"enum": [ "hr", "div" ],
+			"default": "hr"
 		}
 	},
 	"supports": {