OpenTofu 1.13.0

OpenTofu 1.13.0 was released on September 30, 2026. OpenTofu is the MPL-licensed, Linux Foundation fork of Terraform. We covered the release in the news, and our OpenTofu vs Terraform guide compares the two.

What changed

• New convert and assume… functions resolve more values at plan time, so fewer attributes show as (known after apply) in tofu plan
• Experimental built-in linting
• Experimental symbol libraries for sharing values, functions, and types between configurations
• Official Windows ARM64 builds

Before upgrading

• WinRM is removed from the remote-exec and file provisioners. Move to OpenSSH for Windows, or stay on 1.12 until you have.
• This is the last series with official 32-bit 386 and ARM builds.
• macOS 13 or newer is required.

Installing

The release archive holds a single tofu binary:

tar xzf tofu_1.13.0_linux_amd64.tar.gz tofu
sudo install -m 0755 tofu /usr/local/bin/tofu
tofu version

The DEB and RPM packages install with sudo apt install ./tofu_1.13.0_amd64.deb or sudo dnf install ./tofu_1.13.0_amd64.rpm. OpenTofu also publishes APT and RPM repositories, so you get updates automatically. Our Terraform basics guide applies to tofu as well.

Verify Your Download

Download tofu_1.13.0_SHA256SUMS from the GitHub release and check the archive against it:

sha256sum --ignore-missing -c tofu_1.13.0_SHA256SUMS

The checksum file and each artifact also come with GPG signatures (.gpgsig) and Sigstore cosign signatures (.sig and .pem).