[Standard] Scheduled: Avalanche Mainnet & Testnet - Upgrade AvalancheGo to v1.13.5

Scheduled for Sep 23, 12:00 - 15:00 UTC

Scheduled

Scheduled maintenance on Mainnet and Testnet will be performed during the maintenance window.

**Client Updates:**
• AvalancheGo: Upgrading to v1.13.5

**Upgrade Details:**
• Scheduled for approximately 23-09-2025

**Release Notes Summary:**
Standard maintenance release with various improvements and bug fixes.

**Additional Information:**
• Release notes: https://github.com/ava-labs/avalanchego/releases/tag/v1.13.5

Posted Sep 15, 2025 - 08:30 UTC

This scheduled maintenance affects: Avalanche (Mainnet — JSON-RPC API, Mainnet — Websockets API, Fuji — JSON-RPC API, Fuji — Websockets API).