Plans for upgrading to langchain-core 1.x?

[MatthiasHowellYopp]

Context

We're developing new integrations for Langflow that depend on newer versions of langchain partner packages (specifically langchain-aws>=1.0.0 and langchain-google-genai>=4.0.0). Both of these require langchain-core>=1.0.0.

Langflow currently pins langchain-core>=0.3.81,<1.0.0, which makes it impossible to use these newer packages without dependency conflicts.

Specific cases

1. langchain-aws 1.x — Added ValkeyVectorStore for native Valkey vector search support. Only available in langchain-aws>=1.0.0, which requires langchain-core>=1.0.0.

2. langchain-google-genai 4.x — Migrated from the deprecated google-generativeai SDK to the new google-genai SDK. This also resolves a protobuf 5 vs 6 conflict (valkey-glide requires protobuf>=6, while google-ai-generativelanguage used by the older SDK pins protobuf<6).

Question

Are there plans to upgrade Langflow to langchain-core 1.x? If so, is there a rough timeline or tracking issue we can follow?

We'd like to contribute Valkey components (vector store + chat memory + Celery broker support) but the dependency constraint is currently a blocker for using the official langchain-aws Valkey integration.

Workaround

We've implemented a custom ValkeyVectorStore wrapper that uses valkey-glide directly (bypassing langchain-aws), but this requires an unreleased version of valkey-glide with search module support, and the protobuf conflict remains when both valkey-glide and google-generativeai are installed.

[KnyazSh]

In version 1.9.0 they added support for LangChain >1.0 (PR #11114).

[MatthiasHowellYopp]

awesome - thanks - I now also see that I misread the contributions page.