Circle CI experienced a major incident on June 23, 2026 affecting Docker Jobs, lasting 1h 23m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Jun 23, 2026, 06:34 PM UTC
We are investigating reports of delays starting Docker jobs.
- identified Jun 23, 2026, 06:42 PM UTC
We are deploying a change to mitigate this issue.
- identified Jun 23, 2026, 07:04 PM UTC
What's impacted Customers running Docker jobs. Affected jobs are queuing rather than starting, resulting in elevated wait times. What can you expect Docker jobs may remain stuck in "preparing environment" for an extended period. Our engineers have identified the cause and are actively working to restore normal job startup times. Thank you for your patience while our team deploys a fix. Next update We will provide another update as soon as more information is available
- monitoring Jun 23, 2026, 07:29 PM UTC
What's happening Our engineers have deployed a fix and we are observing the job backlog clearing. Docker jobs are now starting normally. What's impacted Customers who submitted Docker jobs during the incident window may still see some jobs completing with elevated queue times. Newly submitted jobs should be starting at normal times. What can you expect Docker job startup times are returning to normal. Thank you for your patience while our engineers resolved this issue. We are monitoring the recovery and will provide a further update if the situation changes.
- resolved Jun 23, 2026, 07:58 PM UTC
The issue where customers running Docker jobs experienced significant delays, with jobs stuck in a "preparing environment" state, has now been resolved. We thank you for your patience while our team worked on implementing a fix.