Our latest runtime 2025.04 is now generally available to all Checkly users.

The new runtime uses Playwright 1.51.1 and Node.js v22.11.0.

A new release of the Checkly agent featuring this runtime is also available; the version number is 5.0.0.

Libraries included in the runtime have also been updated, including:

• @azure/identity from 4.4.1 to 4.9.1

• @azure/keyvault-secrets from 4.8.0 to 4.9.0

• @clerk/testingfrom 1.3.0 to 1.4.0

• @faker-js/faker from 9.0.1 to 9.7.0

• @kubernetes/client-node from 0.22.0 to 1.1.2

• nice-grpc from 2.1.9 to 2.1.12

• and more

You can check out the full specs for the new runtime here, and learn more about Checkly runtimes and how to use private locations for your monitoring in our documentation.

Notes

There is a known bug with browser and multistep checks, where a check failure will cause one additional error message to be generated.

This only impacts already failing checks and will not cause disruptions or false alerts, but you might see an error message similar to this in your check failure reports:

Error: ENOENT: no such file or directory, open '/check/e2859f5a-a3c9-4349-bdd8-efe4d9c9a02a/script.js’

This error can be safely ignored when troubleshooting.

Happy monitoring!

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