# Errors with Bun: "lockfile had changes, but lockfile is frozen"

**URL:** <https://forum.codecrafters.io/t/errors-with-bun-lockfile-had-changes-but-lockfile-is-frozen/193>\
**Category:** Bug Reports\
**Created:** [April 26, 2024, 9:45pm UTC](https://forum.codecrafters.io/t/errors-with-bun-lockfile-had-changes-but-lockfile-is-frozen/193 "2024-04-26T21:45:27Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![rohitpaulk](https://yyz1.discourse-cdn.com/flex003/user_avatar/forum.codecrafters.io/rohitpaulk/32/6_2.png) [@rohitpaulk](https://forum.codecrafters.io/u/rohitpaulk)\
**Post date:** [April 26, 2024, 9:45pm UTC](https://forum.codecrafters.io/t/errors-with-bun-lockfile-had-changes-but-lockfile-is-frozen/193/1 "2024-04-26T21:45:27Z")

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Copying from [GitHub](https://github.com/codecrafters-io/build-your-own-x/issues/1035):

Redis challenge, using TypeScript

while running tests my repo suddenly returns:

```auto
This test run was cancelled because it was waiting on a build that failed.
The build failed with the following error:
Detected changes to language_pack (old: bun-1.1, new: deno-1.42).
This isn't supported. If you're trying to upgrade to a new language version, please try creating a new repository.
If you think this is a CodeCrafters bug, please contact us at hello@codecrafters.io.

```

I created a new repository, and on the second step, I get this error now:

```auto
...
remote: [build] Step 10 complete.
remote: [build] Step 11 complete.
remote: [build] > bun install v1.1.4 (fbe2fe0c)
remote: [build] > Resolving dependencies
remote: [build] > Resolved, downloaded and extracted [8]
remote: [build] > error: lockfile had changes, but lockfile is frozen
remote: [build] > note: try re-running without --frozen-lockfile and commit the updated lockfile
remote: [build] Error: process "/bin/sh -c bun install --frozen-lockfile" did not complete successfully: exit code: 1.
remote: [build] > bun install v1.1.4 (fbe2fe0c)
remote: [build] > Resolving dependencies
remote: [build] > Resolved, downloaded and extracted [8]
remote: [build] > error: lockfile had changes, but lockfile is frozen
remote: [build] > note: try re-running without --frozen-lockfile and commit the updated lockfile
remote: [build] Build failed. Check the logs above for the reason.
remote: [build] If you think this is a CodeCrafters error, please contact us at hello@codecrafters.io.
remote: 

```

---

<div class="post-metadata">

**Author:** ![rohitpaulk](https://yyz1.discourse-cdn.com/flex003/user_avatar/forum.codecrafters.io/rohitpaulk/32/6_2.png) [@rohitpaulk](https://forum.codecrafters.io/u/rohitpaulk)\
**Post date:** [April 26, 2024, 9:46pm UTC](https://forum.codecrafters.io/t/errors-with-bun-lockfile-had-changes-but-lockfile-is-frozen/193/2 "2024-04-26T21:46:56Z")

</div>

To anyone seeing this: this happens when `package.json` is updated but `bun.lockb` is not. You’ll need to run `bun install` locally so that `bun.lockb` is updated.

We use this flag so that builds are reproducible, i.e. so that we’re using the exact same versions of dependencies that you’re using locally.

---

<div class="post-metadata">

**Author:** ![rohitpaulk](https://yyz1.discourse-cdn.com/flex003/user_avatar/forum.codecrafters.io/rohitpaulk/32/6_2.png) [@rohitpaulk](https://forum.codecrafters.io/u/rohitpaulk)\
**Post date:** [May 4, 2024, 1:13pm UTC](https://forum.codecrafters.io/t/errors-with-bun-lockfile-had-changes-but-lockfile-is-frozen/193/4 "2024-05-04T13:13:22Z")

</div>

Closed on May 4, 2024, 1:13pm UTC

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