diff --git a/src/hb-ot-shape-complex.hh b/src/hb-ot-shape-complex.hh
index 056d230..8012a9a 100644
--- a/src/hb-ot-shape-complex.hh
+++ b/src/hb-ot-shape-complex.hh
@@ -373,6 +373,8 @@
     /* Unicode-13.0 additions */
     case HB_SCRIPT_CHORASMIAN:
     case HB_SCRIPT_DIVES_AKURU:
+    case HB_SCRIPT_KHITAN_SMALL_SCRIPT:
+    case HB_SCRIPT_YEZIDI:
 
     /* Unicode-14.0 additions */
     case HB_SCRIPT_CYPRO_MINOAN: