Tasks API - deadline not updated

Raised this issue in the chat interface on 27th March, but, I haven’t heard back.

Raising this here as an API defect.

Hi, could you help me with the correct date format to be sent for updating a task deadline? I have tried several approaches, but, the Due Date doesn't get updated.

Below are the API requests being attempted.

1. Query param — ISO 8601 with time (unencoded colons)

curl -v -X PATCH -H "Authorization: Bearer <REDACTED>" "https://app.usequeue.com/api/v1/tasks/yi7UB57nuFSL2bcc1xyJQTzi?deadline=2026-04-11T17:00:00Z"

2. Query param — ISO 8601 with URL-encoded colons

curl -v -X PATCH -H "Authorization: Bearer <REDACTED>" "https://app.usequeue.com/api/v1/tasks/yi7UB57nuFSL2bcc1xyJQTzi?deadline=2026-04-11T17%3A00%3A00Z"

3. Query param — date only

curl -v -X PATCH -H "Authorization: Bearer <REDACTED>" "https://app.usequeue.com/api/v1/tasks/yi7UB57nuFSL2bcc1xyJQTzi?deadline=2026-04-11"

4. Query param — MM/DD/YYYY format

curl -v -X PATCH -H "Authorization: Bearer <REDACTED>" "https://app.usequeue.com/api/v1/tasks/yi7UB57nuFSL2bcc1xyJQTzi?deadline=04%2F11%2F2026"