diff --git a/requirements.txt b/requirements.txt
index 3ce7922..f2da1f7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 rich>=13.0.0
-textual>=0.40.0
+textual>=0.47.0
 websockets>=12.0
 aiohttp>=3.9.0
 pyyaml>=6.0
diff --git a/services/tui_service.py b/services/tui_service.py
index 3035b74..856d87d 100644
--- a/services/tui_service.py
+++ b/services/tui_service.py
@@ -10,7 +10,15 @@ from textual.containers import Container, ScrollableContainer, Horizontal
 from textual.widgets import Static, Input, Header, Footer, LoadingIndicator
 from textual.reactive import reactive
 from textual.suggester import Suggester
-from textual.suggestion import Suggestion
+
+try:
+    from textual.suggestion import Suggestion
+except ImportError:
+    # Textual < 2.0 兼容 — 自行构造 Suggestion
+    class Suggestion:
+        __slots__ = ("value",)
+        def __init__(self, value: str = ""):
+            self.value = value
 from typing import List, Dict
 import asyncio
 from datetime import datetime