0.3.20

langgraph 0.3.20

Summary of Changes

• Replaced msgpack dependency with ormsgpack for improved serialization performance #3953
• Changed behavior when extending subgraphs with missing entrypoints to log a warning instead of raising an exception #3997
• Improved hash function used in UUID generation from 64-bit to 128-bit for better collision resistance #4005

Detailed Changes

langgraph.graph.graph.Graph

• Modified add_edge method to log a warning and continue execution instead of raising a ValueError when a subgraph has a missing entrypoint #3997

langgraph.pregel.algo

• Upgraded the hash function used in _xxhash_str from xxh3_64_hexdigest to xxh3_128_hexdigest for better collision resistance when generating UUIDs #4005

Dependencies

• Replaced msgpack with ormsgpack (version 1.8.0+) dependency for faster and more efficient MessagePack serialization #3953