{old_version} => {new_version} didn't increase the version;

Error message

{old_version} => {new_version} didn't increase the version; when bumping to a pre-release version you also need to increase a release version component, e.g., with `--bump <major|minor|patch>`

What it means

Error "{old_version} => {new_version} didn't increase the version; when bumping to a pre-release version you also need to increase a release version component, e.g., with `--bump <major|minor|patch>`" thrown in astral-sh/uv.

Source

Thrown at crates/uv/src/commands/project/version.rs:311

                    kind: PrereleaseKind::Alpha,
                    value: spec.value,
                }),
                VersionBump::Beta => new_version.bump(BumpCommand::BumpPrerelease {
                    kind: PrereleaseKind::Beta,
                    value: spec.value,
                }),
                VersionBump::Rc => new_version.bump(BumpCommand::BumpPrerelease {
                    kind: PrereleaseKind::Rc,
                    value: spec.value,
                }),
                VersionBump::Post => new_version.bump(BumpCommand::BumpPost { value: spec.value }),
                VersionBump::Dev => new_version.bump(BumpCommand::BumpDev { value: spec.value }),
            }
        }

        if new_version <= old_version {
            if old_version.is_stable() && new_version.is_pre() {
                return Err(anyhow!(
                    "{old_version} => {new_version} didn't increase the version; when bumping to a pre-release version you also need to increase a release version component, e.g., with `--bump <major|minor|patch>`"
                ));
            }
            if new_version.is_dev() && !old_version.is_dev() {
                return Err(anyhow!(
                    "{old_version} => {new_version} didn't increase the version; when bumping to a dev version you also need to increase another version component, e.g., with `--bump <major|minor|patch|alpha|beta|rc>`"
                ));
            }
            return Err(anyhow!(
                "{old_version} => {new_version} didn't increase the version; provide the exact version to force an update"
            ));
        }

        Some(new_version)
    } else {
        None
    };

View on GitHub (pinned to f1a42680ff)

When it happens

Trigger: Thrown at crates/uv/src/commands/project/version.rs:311 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of astral-sh/uv@f1a42680ff (2026-08-16). Data as JSON: /api/errors/099f737b52d088b6. Report an issue: GitHub.