ℹ️ This is NOT a mandatory upgrade for validators, but it is highly recommended. There is no coordinated halt or governance proposal — nodes can upgrade at their convenience with a normal binary swap and restart. ⚙️

v6.6.1 is a patch release on top of v6.6.0 🚀. Its primary impact is for RPC node operators, addressing two issues: a 🧵 PebbleDB iterator defect that could result in a stack overflow (#3821), and 📄 LCD pagination, which regressed in v6.6.0 and has been restored while preserving the v6.6 precompile semantics (#3873). This release additionally includes a fix for the static seid SIGSEGV 💥 (pinning a pre-gcc-12 libgcc unwinder), a boot smoke gate 🔬, and release tooling improvements 🧹.

🎯 Who Should Upgrade

What's Changed

• Backport release/v6.6: Fix static seid SIGSEGV (pin pre-gcc-12 libgcc unwinder), boot smoke gate, manual-tag binary builds (#3749) by @monty-sei in https://github.com/sei-protocol/sei-chain/pull/3802
• Fix PebbleDB iterator for stackoverflow by @yzang2019 in https://github.com/sei-protocol/sei-chain/pull/3821
• Backport release/v6.6: goreleaser: drop duplicate changelog + Full Changelog link from release notes by @seidroid[bot] in https://github.com/sei-protocol/sei-chain/pull/3857
• Backport release/v6.6: Restore LCD pagination while preserving v6.6 precompile semantics by @seidroid[bot] in https://github.com/sei-protocol/sei-chain/pull/3873
• Backport release/v6.6: Update v6.6 changelog in prep to cut patch release by @seidroid[bot] in https://github.com/sei-protocol/sei-chain/pull/3877
• Bump version in prep to cut v6.6.1 by @masih in https://github.com/sei-protocol/sei-chain/pull/3878

Full Changelog: https://github.com/sei-protocol/sei-chain/compare/v6.6.0...v6.6.1

Experimental Pre-built Binaries

Pre-built statically-linked seid binary attached below for linux/amd64.

Verify your download:

sha256sum -c checksums.txt --ignore-missing

For Docker images, see ghcr.io/sei-protocol/sei.