From 4f708a777f5bfd81bd590a4d647b310038beb551 Mon Sep 17 00:00:00 2001
From: ihrpr <inna@anthropic.com>
Date: Tue, 17 Jun 2025 11:38:00 +0100
Subject: [PATCH] update latest protocol version

---
 src/client/auth.test.ts                            |  3 ++-
 .../stateManagementStreamableHttp.test.ts          | 14 +++++++-------
 src/types.test.ts                                  |  3 ++-
 src/types.ts                                       |  3 ++-
 4 files changed, 13 insertions(+), 10 deletions(-)

diff --git a/src/client/auth.test.ts b/src/client/auth.test.ts
index 1b9fb0712..8f415c17f 100644
--- a/src/client/auth.test.ts
+++ b/src/client/auth.test.ts
@@ -1,3 +1,4 @@
+import { LATEST_PROTOCOL_VERSION } from '../types.js';
 import {
   discoverOAuthMetadata,
   startAuthorization,
@@ -202,7 +203,7 @@ describe("OAuth Authorization", () => {
       const [url, options] = calls[0];
       expect(url.toString()).toBe("https://auth.example.com/.well-known/oauth-authorization-server");
       expect(options.headers).toEqual({
-        "MCP-Protocol-Version": "2025-03-26"
+        "MCP-Protocol-Version": LATEST_PROTOCOL_VERSION
       });
     });
 
diff --git a/src/integration-tests/stateManagementStreamableHttp.test.ts b/src/integration-tests/stateManagementStreamableHttp.test.ts
index d12a4f993..4a191134b 100644
--- a/src/integration-tests/stateManagementStreamableHttp.test.ts
+++ b/src/integration-tests/stateManagementStreamableHttp.test.ts
@@ -5,7 +5,7 @@ import { Client } from '../client/index.js';
 import { StreamableHTTPClientTransport } from '../client/streamableHttp.js';
 import { McpServer } from '../server/mcp.js';
 import { StreamableHTTPServerTransport } from '../server/streamableHttp.js';
-import { CallToolResultSchema, ListToolsResultSchema, ListResourcesResultSchema, ListPromptsResultSchema, DEFAULT_NEGOTIATED_PROTOCOL_VERSION } from '../types.js';
+import { CallToolResultSchema, ListToolsResultSchema, ListResourcesResultSchema, ListPromptsResultSchema, LATEST_PROTOCOL_VERSION } from '../types.js';
 import { z } from 'zod';
 
 describe('Streamable HTTP Transport Session Management', () => {
@@ -145,7 +145,7 @@ describe('Streamable HTTP Transport Session Management', () => {
         params: {}
       }, ListToolsResultSchema);
 
-      
+
     });
     it('should operate without session management', async () => {
       // Create and connect a client
@@ -220,15 +220,15 @@ describe('Streamable HTTP Transport Session Management', () => {
       });
 
       const transport = new StreamableHTTPClientTransport(baseUrl);
-      
+
       // Verify protocol version is not set before connecting
       expect(transport.protocolVersion).toBeUndefined();
-      
+
       await client.connect(transport);
-      
+
       // Verify protocol version is set after connecting
-      expect(transport.protocolVersion).toBe(DEFAULT_NEGOTIATED_PROTOCOL_VERSION);
-      
+      expect(transport.protocolVersion).toBe(LATEST_PROTOCOL_VERSION);
+
       // Clean up
       await transport.close();
     });
diff --git a/src/types.test.ts b/src/types.test.ts
index bc1091105..0115f2eda 100644
--- a/src/types.test.ts
+++ b/src/types.test.ts
@@ -12,7 +12,7 @@ describe("Types", () => {
 
     test("should have correct latest protocol version", () => {
         expect(LATEST_PROTOCOL_VERSION).toBeDefined();
-        expect(LATEST_PROTOCOL_VERSION).toBe("2025-03-26");
+        expect(LATEST_PROTOCOL_VERSION).toBe("2025-06-17");
     });
     test("should have correct supported protocol versions", () => {
         expect(SUPPORTED_PROTOCOL_VERSIONS).toBeDefined();
@@ -20,6 +20,7 @@ describe("Types", () => {
         expect(SUPPORTED_PROTOCOL_VERSIONS).toContain(LATEST_PROTOCOL_VERSION);
         expect(SUPPORTED_PROTOCOL_VERSIONS).toContain("2024-11-05");
         expect(SUPPORTED_PROTOCOL_VERSIONS).toContain("2024-10-07");
+        expect(SUPPORTED_PROTOCOL_VERSIONS).toContain("2025-03-26");
     });
 
     describe("ResourceLink", () => {
diff --git a/src/types.ts b/src/types.ts
index 1f7f6fa0d..a6f596233 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -1,9 +1,10 @@
 import { z, ZodTypeAny } from "zod";
 
-export const LATEST_PROTOCOL_VERSION = "2025-03-26";
+export const LATEST_PROTOCOL_VERSION = "2025-06-17";
 export const DEFAULT_NEGOTIATED_PROTOCOL_VERSION = "2025-03-26";
 export const SUPPORTED_PROTOCOL_VERSIONS = [
   LATEST_PROTOCOL_VERSION,
+  "2025-03-26",
   "2024-11-05",
   "2024-10-07",
 ];