Deno JSR "Could not find version that matches" in CI

Deno resolved a jsr: package but no published version satisfies the requested constraint. The registry has the package, but not a release in the range you asked for.

What this error means

The run fails with "error: Could not find version of \"@scope/pkg\" that matches specified version constraint \"^1.2.0\"".

deno

error: Could not find version of "@std/assert" that matches specified version constraint "^99.0.0"
    at file:///home/runner/work/app/app/src/main.ts:1:24

Common causes

The constraint has no published release

You requested a range like ^99.0.0 that JSR has never published, so resolution finds nothing to install.

A stale lockfile references a yanked or absent version

The lockfile pins a version no longer available, and CI cannot re-resolve it against the constraint.

How to fix it

Pin a version that exists on JSR

Check the published versions for the package on JSR.
Update the specifier or import map to a real version range.
Re-run so resolution succeeds.

src/main.ts

import { assertEquals } from "jsr:@std/assert@^1.0.0";

Refresh the lockfile

Regenerate the lockfile so it reflects versions that currently exist, then commit it.

Terminal

deno cache --reload main.ts

How to prevent it

Use version ranges that JSR actually publishes.
Commit an up-to-date deno.lock so CI resolves deterministically.
Update pins when a dependency version is yanked.