diff --git a/mcp/src/test/java/io/modelcontextprotocol/client/StdioMcpAsyncClientTests.java b/mcp/src/test/java/io/modelcontextprotocol/client/StdioMcpAsyncClientTests.java
index c39080138..8c0069d6d 100644
--- a/mcp/src/test/java/io/modelcontextprotocol/client/StdioMcpAsyncClientTests.java
+++ b/mcp/src/test/java/io/modelcontextprotocol/client/StdioMcpAsyncClientTests.java
@@ -25,12 +25,12 @@ protected McpClientTransport createMcpTransport() {
 		ServerParameters stdioParams;
 		if (System.getProperty("os.name").toLowerCase().contains("win")) {
 			stdioParams = ServerParameters.builder("cmd.exe")
-				.args("/c", "npx.cmd", "-y", "@modelcontextprotocol/server-everything", "dir")
+				.args("/c", "npx.cmd", "-y", "@modelcontextprotocol/server-everything", "stdio")
 				.build();
 		}
 		else {
 			stdioParams = ServerParameters.builder("npx")
-				.args("-y", "@modelcontextprotocol/server-everything", "dir")
+				.args("-y", "@modelcontextprotocol/server-everything", "stdio")
 				.build();
 		}
 		return new StdioClientTransport(stdioParams);
diff --git a/mcp/src/test/java/io/modelcontextprotocol/client/StdioMcpSyncClientTests.java b/mcp/src/test/java/io/modelcontextprotocol/client/StdioMcpSyncClientTests.java
index 8e75c4a3d..706aa9b2e 100644
--- a/mcp/src/test/java/io/modelcontextprotocol/client/StdioMcpSyncClientTests.java
+++ b/mcp/src/test/java/io/modelcontextprotocol/client/StdioMcpSyncClientTests.java
@@ -33,12 +33,12 @@ protected McpClientTransport createMcpTransport() {
 		ServerParameters stdioParams;
 		if (System.getProperty("os.name").toLowerCase().contains("win")) {
 			stdioParams = ServerParameters.builder("cmd.exe")
-				.args("/c", "npx.cmd", "-y", "@modelcontextprotocol/server-everything", "dir")
+				.args("/c", "npx.cmd", "-y", "@modelcontextprotocol/server-everything", "stdio")
 				.build();
 		}
 		else {
 			stdioParams = ServerParameters.builder("npx")
-				.args("-y", "@modelcontextprotocol/server-everything", "dir")
+				.args("-y", "@modelcontextprotocol/server-everything", "stdio")
 				.build();
 		}
 		return new StdioClientTransport(stdioParams);