langchain dep, revert python bump

pyproject.toml

@@ -24,12 +24,13 @@ classifiers = [
 
 
 [tool.poetry.dependencies]
-python = ">=3.10,<4.0"
+python = ">=3.9,<4.0"
 torch = ">=2.1.1,<3.0"
 transformers = "*"
 asyncio = ">=3.4.3,<4.0"
 einops = "0.7.0"
 google-generativeai = "0.3.1"
+langchain = "0.1.13"
 langchain-core = "0.1.22"
 langchain-community = "0.0.20"
 langsmith = "0.0.87"

requirements.txt

@@ -1,6 +1,7 @@
 torch==2.1.1
 transformers
 pandas
+langchain==0.1.13
 langchain-core==0.1.22
 langchain-community==0.0.20
 langsmith==0.0.87