diff --git a/packages/block-library/src/post-terms/block.json b/packages/block-library/src/post-terms/block.json
index a79af6ef85539..660dada007884 100644
--- a/packages/block-library/src/post-terms/block.json
+++ b/packages/block-library/src/post-terms/block.json
@@ -26,7 +26,8 @@
 		},
 		"typography": {
 			"lineHeight": true,
-			"fontSize": true
+			"fontSize": true,
+			"__experimentalFontWeight": true
 		}
 	},
 	"style": "wp-block-post-terms"