The Zcash Foundation is pleased to announce the release of Zebra 3.1.0. Hot on the heels of the Zebra 3.0.0 release, Zebra 3.1.0 is a stability and infrastructure-focused release that improves Docker support across architectures, tightens mempool hygiene with a new dust filter, and makes Zebra’s RPC interface more capable for power users.
It also includes several quality-of-life fixes for debugging, logging, and documentation, continuing the transition away from zcashd and toward a robust Rust-based Zcash node.
Stronger multi-arch Docker support
Running Zebra in containers is now more reliable across both ARM64 and AMD64 hardware. The Docker base image was updated from Debian Bookworm to Trixie, and the multi-architecture manifest logic was fixed so that users on different platforms pull the correct image variant automatically. This resolves earlier issues where ARM users could receive incompatible images, making Zebra usable on devices like Apple Silicon and cloud ARM instances.
Smarter mempool with dust filtering
Zebra 3.1.0 introduces a mempool dust filter that rejects transactions whose outputs are extremely small (“dust”), which are often used in spam or nuisance activity. By filtering these transactions from the mempool before they propagate, Zebra helps protect the network from certain spam vectors and reduces resource usage for node operators.
More capable and tunable RPC
The maximum size of RPC responses has been increased in this release, and it is now configurable, giving applications that rely on large queries more room to grow. This is particularly useful for monitoring, analytics, and infrastructure tools that query large views of node state, while still allowing operators to set limits appropriate for their environment.
Part of the zcashd deprecation push
This release lands alongside Zebra 3.0.0 as part of the broader effort to wrap up zcashd deprecation and make Zebra the go-to modern, Rust-based Zcash node. With stronger multi-arch Docker images, a cleaner and more resilient mempool and richer RPC responses, Zebra 3.1.0 is a solid upgrade for both operators and developers who rely on Zcash’s privacy-preserving infrastructure.
