diff --git a/liteyuki/dev/plugin.py b/liteyuki/dev/plugin.py
index b4ddc896..c541bba2 100644
--- a/liteyuki/dev/plugin.py
+++ b/liteyuki/dev/plugin.py
@@ -21,6 +21,8 @@ def run_plugins(*module_path: str | Path):
         module_path: 插件路径，参考`liteyuki.load_plugin`的函数签名
     """
     cfg = load_config_in_default()
-    cfg["liteyuki.plugins"] = cfg.get("liteyuki.plugins", []).extend(module_path)
+    plugins = cfg.get("liteyuki.plugins", [])
+    plugins.extend(module_path)
+    cfg["liteyuki.plugins"] = plugins
     bot = LiteyukiBot(**cfg)
     bot.run()