diff --git a/backend/poetry.lock b/backend/poetry.lock
index 28c48b8923..d33a3bcd3b 100644
--- a/backend/poetry.lock
+++ b/backend/poetry.lock
@@ -1994,20 +1994,20 @@ typing-extensions = ">=4.7.0,<5.0.0"
 
 [[package]]
 name = "langgraph"
-version = "1.1.4"
+version = "1.1.8"
 description = "Building stateful, multi-actor applications with LLMs"
 optional = false
 python-versions = ">=3.10"
 groups = ["main"]
 files = [
-    {file = "langgraph-1.1.4-py3-none-any.whl", hash = "sha256:77ebe7ed44a2699f13696bf41f1dabe7b5fa8e6ad51e3597f2f175492e8f3656"},
-    {file = "langgraph-1.1.4.tar.gz", hash = "sha256:c951a859f68a021c69a27500db4eafc1900fc7ac32a54f7fc31d277165d04bed"},
+    {file = "langgraph-1.1.8-py3-none-any.whl", hash = "sha256:3278c7e335da25eac3327bb474c502d4cab94ae6dcc685fbf93be2bbf7664cd5"},
+    {file = "langgraph-1.1.8.tar.gz", hash = "sha256:a97b8248129f2e007b81eef8277009ad1e1280b75fa2175889ab5aff5dcc4578"},
 ]
 
 [package.dependencies]
-langchain-core = ">=0.1"
+langchain-core = ">=1.3.0,<2"
 langgraph-checkpoint = ">=2.1.0,<5.0.0"
-langgraph-prebuilt = ">=1.0.8,<1.1.0"
+langgraph-prebuilt = ">=1.0.9,<1.1.0"
 langgraph-sdk = ">=0.3.0,<0.4.0"
 pydantic = ">=2.7.4"
 xxhash = ">=3.5.0"
@@ -2030,18 +2030,18 @@ ormsgpack = ">=1.12.0"
 
 [[package]]
 name = "langgraph-prebuilt"
-version = "1.0.8"
+version = "1.0.13"
 description = "Library with high-level APIs for creating and executing LangGraph agents and tools."
 optional = false
 python-versions = ">=3.10"
 groups = ["main"]
 files = [
-    {file = "langgraph_prebuilt-1.0.8-py3-none-any.whl", hash = "sha256:d16a731e591ba4470f3e313a319c7eee7dbc40895bcf15c821f985a3522a7ce0"},
-    {file = "langgraph_prebuilt-1.0.8.tar.gz", hash = "sha256:0cd3cf5473ced8a6cd687cc5294e08d3de57529d8dd14fdc6ae4899549efcf69"},
+    {file = "langgraph_prebuilt-1.0.13-py3-none-any.whl", hash = "sha256:7055e9fad41fbd3593800aed0aea0a6e974b17f33ed51b80d3d3a031212dd7c0"},
+    {file = "langgraph_prebuilt-1.0.13.tar.gz", hash = "sha256:ad219782a80e1718e7e7794de49e0ae307111d45cbcffab9a52725a66a609456"},
 ]
 
 [package.dependencies]
-langchain-core = ">=1.0.0"
+langchain-core = ">=1.3.1"
 langgraph-checkpoint = ">=2.1.0,<5.0.0"
 
 [[package]]