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Runtime 2026.04 is here!

We shipped a brand-new runtime with a major upgrade: Playwright v1.58.2 and Node.js v24.13.1 are now available in Browser and Multistep Checks.

Head to Account settings > Runtimes to select it or make it your default. For the full spec, check the runtime documentation.

New dependencies

We added seven new packages to the runtime — some by popular request, some we think you’ll love:

  • axios-cookiejar-support — Persistent cookie handling for Axios requests

  • csv-parse — Parse CSV data directly in your checks

  • imapflow — Monitor email delivery by reading IMAP inboxes

  • mysql2 — A faster, more modern MySQL client

  • pdf-parse — Extract and verify text content from PDFs

  • tough-cookie — Advanced cookie management across requests

  • winston — Structured logging for better debugging

Goodbye, jsdom

We removed jsdom from this runtime. For DOM interactions, use Playwright's built-in Page APIs instead.

Private locations

Runtime 2026.04 is available on Checkly Agent 7.0.0, which ships with the latest VM2 version for tighter security: 3.10.5. Update your agent to 7.0.0 or later to unlock this runtime in your private locations.

A note on performance

The updated VM2 security layer adds stricter sandboxing. Browser checks may run slower compared to previous runtime versions. We're working to improve this in upcoming releases.

All included dependencies

Every package available in Runtime 2026.04, all 67 of them:

  • @playwright/test 1.58.2

  • @axe-core/playwright 4.11.1

  • @azure/identity 4.13.0

  • @azure/keyvault-secrets 4.10.0

  • @checkly/playwright-helpers 1.0.4

  • @clerk/testing 1.14.2

  • @faker-js/faker 10.3.0

  • @google-cloud/local-auth 3.0.1

  • @kubernetes/client-node 1.4.0

  • @opentelemetry/api 1.9.0

  • @opentelemetry/exporter-metrics-otlp-grpc 0.212.0

  • @opentelemetry/sdk-metrics 2.5.1

  • @opentelemetry/sdk-trace-base 2.5.1

  • @t3-oss/env-nextjs 0.7.3

  • @xmldom/xmldom 0.9.8

  • aws4 1.13.2

  • axios 1.13.5

  • axios-cookiejar-support 5.0.5

  • crypto-js 4.2.0

  • csv-parse 6.1.0

  • date-fns 4.1.0

  • date-fns-tz 3.2.0

  • dotenv 17.3.1

  • ethers 6.16.0

  • expect 30.2.0

  • form-data 4.0.5

  • gaxios 7.1.3

  • gmail-api-parse-message-ts 2.2.33

  • google-auth-library 10.6.1

  • googleapis 171.4.0

  • graphql 16.13.0

  • graphql-tag 2.12.6

  • imapflow 1.2.10

  • jose 6.1.3

  • jsonwebtoken 9.0.3

  • lodash 4.17.23

  • long 5.3.2

  • mailosaur 11.0.2

  • moment 2.30.1

  • mysql 2.18.1

  • mysql2 3.18.2

  • nice-grpc 2.1.14

  • nice-grpc-client-middleware-deadline 2.0.17

  • nice-grpc-client-middleware-devtools 1.0.9

  • nice-grpc-client-middleware-retry 3.1.13

  • nice-grpc-common 2.0.2

  • nice-grpc-error-details 0.2.12

  • nice-grpc-opentelemetry 0.1.20

  • nice-grpc-prometheus 0.2.9

  • nice-grpc-server-health 2.0.17

  • nice-grpc-server-middleware-terminator 2.0.16

  • nice-grpc-server-reflection 3.0.3

  • nice-grpc-web 3.3.9

  • node-pop3 0.11.0

  • otpauth 9.5.0

  • pdf-parse 1.1.1

  • pdf2json 4.0.2

  • playwright 1.58.2

  • prisma 7.4.1

  • protobufjs 8.0.0

  • tedious 19.2.1

  • tough-cookie 6.0.0

  • twilio 5.12.2

  • uuid 11.1.0

  • winston 3.19.0

  • ws 8.19.0

  • xml-crypto 6.1.2

  • xml-encryption 3.1.0

  • zod 3.24.3

Happy monitoring!

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