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python LangGraph Releases · · 1.2.6

LangGraph 1.2.6 fixes nested subgraph checkpointing and streaming

sdkaiinfraengineerpython-agentic
patch

LangGraph version 1.2.6 addresses two critical regressions, restoring correct checkpointing for nested subgraphs and ensuring running subgraphs are canceled when streaming aborts. These fixes are important for stable and predictable execution of complex graph workflows. The update targets developers using LangGraph for multi-step agentic processes or complex state machines.

  • →release(langgraph): 1.2.6 (#8139)
  • →nested subgraph inherits parent checkpoint_ns (regression in 1.2.3) (#8053)
  • →cancel running subgraphs on v3 stream abort [closes #8029] (#8057)
  • →release(cli): 0.4.30 (#8101)
  • →standardize package README.md structure (#8064)
Fixes (2) ›
  • fix nested subgraph inherits parent checkpoint_ns (regression in 1.2.3) (#8053)
  • fix cancel running subgraphs on v3 stream abort [closes #8029] (#8057)
Maintenance (4) ›
  • release(langgraph): 1.2.6 (#8139)
  • release(cli): 0.4.30 (#8101)
  • docs standardize package README.md structure (#8064)
  • chore(deps): bump tornado from 6.5.5 to 6.5.6 in /libs/langgraph (#8063)
Read the original announcement →

https://github.com/langchain-ai/langgraph/releases/tag/1.2.6

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