Changelog | VCL | Fastly Documentation

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This changelog provides information on changes across the Fastly platform, including to the VCL language, our public API, CLI, the Terraform provider, Terraform provider (beta), Compute Rust SDK, Compute JavaScript SDK, Compute Go SDK, and the Next-Gen WAF.

June 17, 2025
VCL Changes
Change to VCL notation
August 14, 2024
VCL Additions Changes Fixes Removes items
tls.client.cert_verify_result and tls.client.raw_certificate_b64 removal, regsub syntax addition, bug fixes
July 1, 2024
VCL Additions
UUID updates and additions
May 15, 2024
VCL Additions Changes Fixes Removes items
VCL_RECV changes, x-compress-hint behavior change, bugfixes
March 26, 2024
VCL Changes
Shielding VCL Rendering, New VCL Syntax
August 8, 2023
VCL Changes
Regular expressions in VCL
August 4, 2023
VCL Changes
Shielding VCL Rendering
November 4, 2022
VCL Changes
October 2022 VCL release
June 2, 2021
VCL Additions
June 2021 VCL release ("Pizza")
February 15, 2021
VCL Additions
February 2021 VCL release ("Pakora")