diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index af62215d0..5ccc011c4 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -11,7 +11,7 @@ dependencies = [
   "cryptography>=42.0.0,<49.0.0",
   "fastapi>=0.111.0",
   "greenlet>=3.0.3",
-  "lark-channel-sdk==1.2.0",
+  "lark-channel-sdk==1.4.0",
   "httpx>=0.27.0",
   "openai>=1.40.0",
   "packaging>=24.0",