> ## Documentation Index
> Fetch the complete documentation index at: https://docs.chainstack.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Chainstack updates: August 26, 2024

> Polygon zkEVM nodes on Chainstack now support WebSocket connections, enabling real-time event subscriptions for zkEVM rollup applications and bots.

**Protocols**. Now, Polygon zkEVM supports connecting over WebSocket.