Prefect Horizon incident

Github webhooks are delayed

Minor Resolved View vendor source →

Prefect Horizon experienced a minor incident on February 3, 2026 affecting Horizon: Builds (Builds), lasting 3h 54m. The incident has been resolved; the full update timeline is below.

Started
Feb 03, 2026, 03:25 PM UTC
Resolved
Feb 03, 2026, 07:19 PM UTC
Duration
3h 54m
Detected by Pingoru
Feb 03, 2026, 03:25 PM UTC

Affected components

Horizon: Builds (Builds)

Update timeline

  1. investigating Feb 03, 2026, 03:25 PM UTC

    Github webhooks are delayed, so Horizon builds are not triggering on commit pushes. The team is investigating

  2. investigating Feb 03, 2026, 03:49 PM UTC

    Commit events from Github are delayed but eventually firing. Horizon builds are still being created. The team is still investigating

  3. investigating Feb 03, 2026, 05:28 PM UTC

    Github push event latency is improving, and our monitoring shows decreased commit-to-build latency. The team will continue to monitor

  4. resolved Feb 03, 2026, 07:19 PM UTC

    This is now resolved