---
title: "Changes to Update a study"
method: PATCH
path: "/api/v1/studies/{id}/"
---

# Changes to Update a study

`PATCH /api/v1/studies/{id}/`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 9 of 34 revisions.

- **2026-10-30** `36e3bb40c638`: 2 info
- **2026-10-02** `9cabd62d103f`: 4 info
- **2026-09-30** `92549d3973c0`: 2 info
- **2026-09-17** `6c9aa73fa51f`: 1 warning, 1 info
- **2026-09-12** `e9e1e322aacb`: 1 info
- **2026-09-10** `abf90058829f`: 2 info
- **2026-09-03** `1b48ec8f5693`: 2 breaking, 2 info
- **2026-08-22** `c3fff03d2ecc`: 8 warning, 2 info
- **2026-07-26** `421c6aa415ef`: 1 breaking

## Changes

- **2026-10-30** `36e3bb40c638`: 2 info
  - added the optional property `minimum_reward_per_hour` to the response with the `200` status
  - added the optional property `minimum_reward_per_hour_source` to the response with the `200` status
- **2026-10-02** `9cabd62d103f`: 4 info
  - added the new optional request property `filters/items/oneOf[subschema #1: SelectFilterRequest]/matching_parameters`
  - added the new optional request property `filters/items/oneOf[subschema #3: CompositeFilterRequest]/selected_filters/items/oneOf[subschema #1: SelectFilterRequest]/matching_parameters`
  - added the optional property `filters/items/oneOf[subschema #1: SelectFilterResponse]/matching_parameters` to the response with the `200` status
  - added the optional property `filters/items/oneOf[subschema #3: CompositeFilterResponse]/selected_filters/items/oneOf[subschema #1: SelectFilterResponse]/matching_parameters` to the response with the `200` status
- **2026-09-30** `92549d3973c0`: 2 info
  - added the new optional request property `completion_codes/items/actions/items/oneOf[subschema #7: FixedScreenOut]/max_screen_outs_per_participant`
  - added the optional property `completion_codes/items/actions/items/oneOf[subschema #7: FixedScreenOut]/max_screen_outs_per_participant` to the response with the `200` status
- **2026-09-17** `6c9aa73fa51f`: 1 warning, 1 info
  - deleted the `header` request parameter `Authorization`
  - the endpoint scheme security `token` was added to the API
- **2026-09-12** `e9e1e322aacb`: 1 info
  - api operation id `update-study` removed and replaced with `studies_UpdateStudy`
- **2026-09-10** `abf90058829f`: 2 info
  - added the new optional request property `data_collection_metadata/oneOf[subschema #1: BaseStudyDataCollectionMetadata]/increase_places_on_sync`
  - added the optional property `data_collection_metadata/oneOf[subschema #1: CreateStudyDataCollectionMetadata]/increase_places_on_sync` to the response with the `200` status
- **2026-09-03** `1b48ec8f5693`: 2 breaking, 2 info
  - removed `#/components/schemas/SelectFilter, #/components/schemas/CompositeFilter` from the `filters/items/` request property `oneOf` list
  - added `#/components/schemas/SelectFilterResponse, #/components/schemas/CompositeFilterResponse` to the `filters/items/` response property `oneOf` list for the response status `200`
  - added `#/components/schemas/SelectFilterRequest, #/components/schemas/CompositeFilterRequest` to the `filters/items/` request property `oneOf` list
  - removed `#/components/schemas/SelectFilter, #/components/schemas/CompositeFilter` from the `filters/items/` response property `oneOf` list for the response status `200`
- **2026-08-22** `c3fff03d2ecc`: 8 warning, 2 info
  - the `content_warning_details` request property's maxLength was set to `1000`
  - the `naivety_distribution_rate` request property's max was set to `1.00`
  - the `completion_codes/items/actions/items/oneOf[subschema #7: FixedScreenOut]/fixed_screen_out_reward` request property's min was set to `10.00`
  - the `completion_codes/items/actions/items/oneOf[subschema #7: FixedScreenOut]/slots` request property's min was set to `1.00`
  - the `data_collection_metadata/oneOf[subschema #1: BaseStudyDataCollectionMetadata]/annotators_per_task` request property's min was set to `1.00`
  - the `estimated_completion_time` request property's min was set to `1.00`
  - the `naivety_distribution_rate` request property's min was set to `0.00`
  - the `total_available_places` request property's min was set to `1.00`
  - request property `naivety_distribution_rate` deprecated
  - response property `naivety_distribution_rate` deprecated
- **2026-07-26** `421c6aa415ef`: 1 breaking
  - the `estimated_completion_time` request property type changed from `number` to `integer`, and format from `double` to no format

---

[Operation](https://skmtc.dev/prolific/apis/api-reference/docs/api/v1/studies/:id/patch.md) - [API](https://skmtc.dev/prolific/apis/api-reference.md) - [Page](https://skmtc.dev/prolific/apis/api-reference/changes/api/v1/studies/:id/patch)