diff --git a/server/src/index.ts b/server/src/index.ts
index 1428e80..c215f34 100644
--- a/server/src/index.ts
+++ b/server/src/index.ts
@@ -14,7 +14,7 @@ import express from "express";
 import { findActualExecutable } from "spawn-rx";
 import mcpProxy from "./mcpProxy.js";
 
-const SSE_HEADERS_PASSTHROUGH = ['Authorization'];
+const SSE_HEADERS_PASSTHROUGH = ['authorization'];
 
 const defaultEnvironment = {
   ...getDefaultEnvironment(),