diff --git a/t9.schema.yaml b/t9.schema.yaml
index 1786ddc..5a7f74c 100644
--- a/t9.schema.yaml
+++ b/t9.schema.yaml
@@ -127,6 +127,7 @@ speller:
     - derive/cha/242/
     - derive/chai/2424/
     - derive/bia[no]|cha[no]/2426/
+    - derive/biang/24264/
     - derive/chang/24264/
     - derive/bie|che/243/
     - derive/chen/2436/