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langchain-classic==1.0.3

LangChain Releases / 3/13/2026

📰 NewsDeveloper Stack & Infrastructure

Key Points

  • Release langchain 1.0.3 bundles core maintenance updates and several dependency bumps, as indicated by PR #35834.
  • A notable architectural change moves BaseCrossEncoder to langchain-core, signaling a refactor of core components.
  • The update bumps dependencies across multiple spots, including tornado from 6.5.2 to 6.5.5 in libs/langchain, and upgrades to types-pytz and packaging across libs/langchain.
  • The changelog also references a separate release for langchain_v1 (1.2.11) and a broad minor-and-patch bump across three directories with seven updates.

Changes since langchain-classic==1.0.2

release(langchain): 1.0.3 (#35834)
chore(core): move BaseCrossEncoder to langchain-core (#35809)
chore: bump tornado from 6.5.2 to 6.5.5 in /libs/langchain (#35773)
release(langchain_v1): 1.2.11 (#35723)
chore: bump the minor-and-patch group across 3 directories with 7 updates (#35605)
chore: bump types-pytz from 2025.2.0.20251108 to 2026.1.1.20260304 in /libs/langchain (#35592)
chore: bump packaging from 24.2 to 26.0 in /libs/langchain (#35591)