Checkpointer for mongodb is not updated to support langgraph-checkpoint 3.0

[Haneeshjaikar]

Checkpointer for mongodb is not updated to support langgraph-checkpoint 3.0

Originally posted by @Haneeshjaikar in #6313 (comment)

Issue: MongoDB Checkpointer Not Updated for langgraph-checkpoint@3.0

Summary

The MongoDB checkpointer package has not yet been updated to support langgraph-checkpoint@3.0.
As a result, applications using MongoDB as a checkpoint backend cannot upgrade to the latest version of langgraph without breaking compatibility.

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Affected Packages

• Package: langgraph-checkpoint-mongodb (current version)
• Dependency: langgraph-checkpoint (>=2.0, <3.0)

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Impact

• Blocked upgrades: Applications depending on MongoDB checkpoints are stuck on langgraph-checkpoint@2.x.
• Security concern: The older MongoDB checkpointer version triggers Trivy vulnerability scans due to outdated dependencies.
• Inconsistency: Other checkpoint strategies (redis, pg, sqlite) have already been updated for v3.0 compatibility.

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Steps to Reproduce

1. Attempt to upgrade langgraph-checkpoint to 3.0.0.
2. Use langgraph-checkpoint-mongodb as a checkpointer dependency.
3. Observe dependency conflict error due to version constraints.

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Expected Behavior

The MongoDB checkpointer should support langgraph-checkpoint@^3.0, similar to the Redis, Postgres, and in-memory checkpointers.

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Proposed Solution / Request

Please update the MongoDB checkpointer to support langgraph-checkpoint@^3.0.

[HEI204]

redis checkpointer seems not yet support langgraph-checkpoint@^3.0 as well