diff --git a/packages/block-library/src/latest-posts/block.json b/packages/block-library/src/latest-posts/block.json
index bb8c2d24962f3f..58b1c6da81ca33 100644
--- a/packages/block-library/src/latest-posts/block.json
+++ b/packages/block-library/src/latest-posts/block.json
@@ -111,6 +111,18 @@
 				"fontSize": true
 			}
 		},
+		"__experimentalBorder": {
+			"radius": true,
+			"color": true,
+			"width": true,
+			"style": true,
+			"__experimentalDefaultControls": {
+				"radius": true,
+				"color": true,
+				"width": true,
+				"style": true
+			}
+		},
 		"interactivity": {
 			"clientNavigation": true
 		}