diff --git a/mappings/net/minecraft/world/gen/surfacebuilder/SurfaceBuilder.mapping b/mappings/net/minecraft/world/gen/surfacebuilder/SurfaceBuilder.mapping
index d15b704224..e8ba77659f 100644
--- a/mappings/net/minecraft/world/gen/surfacebuilder/SurfaceBuilder.mapping
+++ b/mappings/net/minecraft/world/gen/surfacebuilder/SurfaceBuilder.mapping
@@ -57,3 +57,5 @@ CLASS net/minecraft/class_3523 net/minecraft/world/gen/surfacebuilder/SurfaceBui
 		ARG 0 id
 		ARG 1 surfaceBuilder
 	METHOD method_29003 getCodec ()Lcom/mojang/serialization/Codec;
+	METHOD method_30478 withConfig (Lnet/minecraft/class_3531;)Lnet/minecraft/class_3504;
+		ARG 1 config