diff --git a/Chapter12/poetry.lock b/Chapter12/poetry.lock
index 2485f78..5ea9488 100644
--- a/Chapter12/poetry.lock
+++ b/Chapter12/poetry.lock
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 2.1.1 and should not be changed by hand.
+# This file is automatically @generated by Poetry 2.2.1 and should not be changed by hand.
 
 [[package]]
 name = "accelerate"
@@ -1443,24 +1443,24 @@ tenacity = ">=8.1.0,<8.4.0 || >8.4.0,<10"
 
 [[package]]
 name = "langchain-core"
-version = "0.3.66"
+version = "0.3.81"
 description = "Building applications with LLMs through composability"
 optional = false
-python-versions = ">=3.9"
+python-versions = "<4.0.0,>=3.9.0"
 groups = ["main"]
 files = [
-    {file = "langchain_core-0.3.66-py3-none-any.whl", hash = "sha256:65cd6c3659afa4f91de7aa681397a0c53ff9282425c281e53646dd7faf16099e"},
-    {file = "langchain_core-0.3.66.tar.gz", hash = "sha256:350c92e792ec1401f4b740d759b95f297710a50de29e1be9fbfff8676ef62117"},
+    {file = "langchain_core-0.3.81-py3-none-any.whl", hash = "sha256:d0f34c88254d78ccb1b9a038f860d13dea90186045026fd8fc3e1265eed73a4e"},
+    {file = "langchain_core-0.3.81.tar.gz", hash = "sha256:0473e7cffbba06017393f2f1ee116da098c298e4ec478ada91d321f42dff921c"},
 ]
 
 [package.dependencies]
-jsonpatch = ">=1.33,<2.0"
-langsmith = ">=0.3.45"
-packaging = ">=23.2,<25"
-pydantic = ">=2.7.4"
-PyYAML = ">=5.3"
+jsonpatch = ">=1.33.0,<2.0.0"
+langsmith = ">=0.3.45,<1.0.0"
+packaging = ">=23.2.0,<26.0.0"
+pydantic = ">=2.7.4,<3.0.0"
+PyYAML = ">=5.3.0,<7.0.0"
 tenacity = ">=8.1.0,<8.4.0 || >8.4.0,<10.0.0"
-typing-extensions = ">=4.7"
+typing-extensions = ">=4.7.0,<5.0.0"
 
 [[package]]
 name = "langchain-experimental"