We are pleased to announce that Stable Mainnet will be upgraded to Stable v1.9.0 on October 31, 2026.

Stable v1.9.0 is a protocol upgrade focused on strengthening network security, reliability, and resilience. The release incorporates security hardening measures and protocol-level improvements designed to reinforce Stable’s infrastructure and maintain consistent network operations.

Together, these improvements strengthen Stable’s foundation for secure, high-performance payments and settlement, supporting the reliability that enterprises and financial institutions require to operate onchain 24/7.

Stable v1.9.0 introduces security and reliability enhancements across the protocol, strengthening the network’s ability to maintain safe and consistent operations.

Upgrade activation: October 31, 2026, at 09:00 UTC
Upgrade height: 45,091,000
Recommended upgrade preparation: At least 24 hours before activation if using Stablevisor or Cosmovisor.

For node operators not using Stablevisor or Cosmovisor, wait for the node to reach the upgrade height and replace the binary once the node stops at that height.

For users, the upgrade reinforces the security and reliability of the network supporting their transactions.

For developers and businesses, the upgrade strengthens the infrastructure supporting applications and payment operations, reinforcing reliable transaction processing and settlement.

For validators, it introduces protocol-level security improvements that support continued network integrity and operational stability.

At a high level, v1.9.0 focuses on two areas: protocol security hardening and network resilience.

Stable v1.9.0 incorporates additional security safeguards and improvements aligned with ongoing security reviews of the underlying protocol and its upstream dependencies.

These enhancements reinforce Stable’s defense-in-depth approach, strengthening protocol protections and reducing potential risks under exceptional operating conditions.

The upgrade also introduces enhancements that reinforce network stability and operational consistency.

These changes help strengthen Stable’s ability to maintain dependable transaction processing and network operations as the ecosystem continues to scale.

Security is a foundational requirement for financial infrastructure. Stable continuously reviews its protocol and upstream dependencies, incorporates applicable security improvements, and strengthens its infrastructure through ongoing engineering and testing.

Stable v1.9.0 reflects this commitment by introducing additional safeguards that help maintain a secure and resilient environment for applications, validators, and network participants.

Stable v1.9.0 strengthens the network’s foundation for payments, exchange settlements, treasury operations, and other financial activities that depend on secure and reliable blockchain infrastructure.

With this upgrade, Stable continues to invest in the security, stability, and resilience required to support financial activity onchain at scale.

Documentation: https://docs.stable.xyz
Mainnet Hub: https://hub.stable.xyz
StablePay: https://www.stablepay.to/
Blog: https://blog.stable.xyz
X: @Stable
Community: https://discord.gg/stablexyz