# Stage 1 (LangChain core), Stage 5 (LangGraph), Stage 7 (serving).
# LangChain 1.x. The v1 agent surface lives in langchain.agents, not langgraph.prebuilt.
-r requirements-core.txt
langchain>=1.3
langchain-core>=1.5
langgraph>=1.2
langchain-ollama>=1.0
# Only needed if a lesson reaches for a legacy chain or retriever.
langchain-classic>=1.0
