Retool incident

Workflows with custom npm libraries failing to install

Retool experienced a minor incident on May 8, 2026 affecting Workflows, lasting 5h 30m. The incident has been resolved; the full update timeline is below.

Started: May 08, 2026, 05:03 PM UTC
Resolved: May 08, 2026, 10:33 PM UTC
Duration: 5h 30m
Detected by Pingoru: May 08, 2026, 05:03 PM UTC

Affected components

Workflows

Update timeline

identified May 08, 2026, 05:03 PM UTC

We are investigating an issue where workflows using custom npm libraries are failing to execute. This affects both Retool Cloud and self-hosted customers. A fix has been identified and is currently being deployed to Cloud. Self-hosted patch releases are in progress.
monitoring May 08, 2026, 06:15 PM UTC

A fix has been deployed to Retool Cloud. Self-hosted customers should upgrade to 3.300.28-stable or 3.334.12-stable, which has the fix. We are monitoring to confirm full resolution.
resolved May 08, 2026, 10:33 PM UTC

This incident has been resolved. Self-hosted customers should update to 3.300.28-stable or 3.334.12-stable for the fix.