CATALAYER NEWS
Starknet’s Cairo Toolchain Releases v2.19.5 Update
Source: Bitcoinist · 2026-09-21
TL;DR Cairo v2.19.5 has been released by Starkware. The update contains compiler and code-generation fixes. It is a developer-tooling update, not a Starknet hard fork. Starkware has published Cairo v2.19.5, delivering another maintenance update to the language and compiler toolchain used across the Starknet ecosystem. The release landed on September 17 through the official starkware-libs/cairo repository. This one is best understood as developer infrastructure rather than a network upgrade. Ther
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