diff --git a/dat-was-lib/src/main/java/io/shinhanlife/dat/lib/mcp/ToolMcpServerConfiguration.java b/dat-was-lib/src/main/java/io/shinhanlife/dat/lib/mcp/ToolMcpServerConfiguration.java
index 88ef705f..1c6187d9 100644
--- a/dat-was-lib/src/main/java/io/shinhanlife/dat/lib/mcp/ToolMcpServerConfiguration.java
+++ b/dat-was-lib/src/main/java/io/shinhanlife/dat/lib/mcp/ToolMcpServerConfiguration.java
@@ -45,6 +45,9 @@ public class ToolMcpServerConfiguration {
             HttpServletStreamableServerTransportProvider transportProvider) {
         // "/mcp/*"로 매핑하면 BusinessToolController의 "/mcp/api/v1/tools/local" 까지 가로채게 되므로,
         // 정확히 MCP 통신에 사용되는 "/mcp" 와 "/mcp/message" 두 개만 매핑합니다.
-        return new ServletRegistrationBean<>(transportProvider, "/mcp", "/mcp/message");
+        ServletRegistrationBean<HttpServletStreamableServerTransportProvider> registration = 
+                new ServletRegistrationBean<>(transportProvider, "/mcp", "/mcp/message");
+        registration.setAsyncSupported(true);
+        return registration;
     }
 }