LangGraph 1.2.9 fixes state metadata handling
sdkaiengineerpython-agentic
patch
LangGraph version 1.2.9 includes a fix for how state metadata and counters are handled for the delta channel. This resolves a defect that could impact the accuracy of state tracking in specific execution paths. The patch is now available for all users who have previously adopted LangGraph.
Read the original announcement →
https://github.com/langchain-ai/langgraph/releases/tag/1.2.9
Related releases
- Pydantic-AI v2.9.0: Security fix, GPT-5.6 models, usage command Pydantic AI Releases ·
- LangGraph 1.2.7: Fixes for delta overwrites and UUID generation LangGraph Releases ·
- pydantic-ai v2.1.0: Anthropic web tools, serialization, and bug fixes Pydantic AI Releases ·
- pydantic-ai v2.5.1: Bug Fixes and Model Compatibility Pydantic AI Releases ·
- crewAI 1.15.0: Conversational Flow Tracking and Declarative Flow Loading CrewAI Releases ·
- OpenAI Agents Python Library v0.17.8: Enhancements and Fixes OpenAI Agents SDK (Python) Releases ·