From 206b97f5ca42a144dc38ee6a9441d2e4a8d4450f Mon Sep 17 00:00:00 2001
From: Wei Hu <huwe@microsoft.com>
Date: Wed, 20 Aug 2025 08:00:38 +0800
Subject: [PATCH] Allow additionalProperties for tspconfig.yaml

---
 src/TypeSpec.Extension/Emitter.Csharp/src/options.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/TypeSpec.Extension/Emitter.Csharp/src/options.ts b/src/TypeSpec.Extension/Emitter.Csharp/src/options.ts
index 481cb8d5f4a..07e1e9e95e0 100644
--- a/src/TypeSpec.Extension/Emitter.Csharp/src/options.ts
+++ b/src/TypeSpec.Extension/Emitter.Csharp/src/options.ts
@@ -36,7 +36,7 @@ export interface AzureCSharpEmitterOptions extends CSharpEmitterOptions {
 export const AzureCSharpEmitterOptionsSchema: JSONSchemaType<AzureCSharpEmitterOptions> =
     {
         type: "object",
-        additionalProperties: false,
+        additionalProperties: true,
         properties: {
             ...CSharpEmitterOptionsSchema.properties,
             csharpGeneratorPath: {