diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index a9a13cc1..13af465b 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,6 +1,13 @@
 ===========
 Wijzigingen
 ===========
+1.4.1 (2023-08-29)
+===========
+
+- **Changed:** schema generation such that the `lock` attribute shows up in EIO.bestandsdelen GET response.
+
+Implementation changes
+----------------------
 
 1.4.0 (2023-08-22)
 ===========
diff --git a/README.rst b/README.rst
index 2c7c50da..ece4cc7d 100644
--- a/README.rst
+++ b/README.rst
@@ -24,6 +24,8 @@ Versie      Release datum   API specificatie
 master      n.v.t.          `ReDoc <https://redocly.github.io/redoc/?url=https://raw.githubusercontent.com/VNG-Realisatie/gemma-documentregistratiecomponent/master/src/openapi.yaml>`_,                                           `Scopes <https://github.com/VNG-Realisatie/documenten-api/blob/master/src/autorisaties.md>`_                             `Berichtkenmerken <https://github.com/VNG-Realisatie/documenten-api/blob/master/src/notificaties.md>`_
                             `Swagger <https://petstore.swagger.io/?url=https://raw.githubusercontent.com/VNG-Realisatie/gemma-documentregistratiecomponent/master/src/openapi.yaml>`_
                             (`verschillen <https://github.com/VNG-Realisatie/documenten-api/compare/stable/1.2.x..master>`_)
+1.4.1       2023-08-29      `ReDoc <https://redocly.github.io/redoc/?url=https://raw.githubusercontent.com/VNG-Realisatie/documenten-api/1.4.1/src/openapi.yaml>`_,                                                                 `Scopes <https://github.com/VNG-Realisatie/documenten-api/blob/stable/1.4.1/src/autorisaties.md>`_                      `Berichtkenmerken <https://github.com/VNG-Realisatie/documenten-api/blob/stable/1.4.1/src/notificaties.md>`_
+                            `Swagger <https://petstore.swagger.io/?url=https://raw.githubusercontent.com/VNG-Realisatie/documenten-api/1.4.1/src/openapi.yaml>`_
 1.4.0       2023-08-22      `ReDoc <https://redocly.github.io/redoc/?url=https://raw.githubusercontent.com/VNG-Realisatie/documenten-api/1.4.0/src/openapi.yaml>`_,                                                                 `Scopes <https://github.com/VNG-Realisatie/documenten-api/blob/stable/1.4.0/src/autorisaties.md>`_                      `Berichtkenmerken <https://github.com/VNG-Realisatie/documenten-api/blob/stable/1.4.0/src/notificaties.md>`_
                             `Swagger <https://petstore.swagger.io/?url=https://raw.githubusercontent.com/VNG-Realisatie/documenten-api/1.4.0/src/openapi.yaml>`_
 1.3.x       2023-03-29      `ReDoc <https://redocly.github.io/redoc/?url=https://raw.githubusercontent.com/VNG-Realisatie/documenten-api/stable/1.3.x/src/openapi.yaml>`_,                                                         `Scopes <https://github.com/VNG-Realisatie/documenten-api/blob/stable/1.3.x/src/autorisaties.md>`_                       `Berichtkenmerken <https://github.com/VNG-Realisatie/documenten-api/blob/stable/1.3.x/src/notificaties.md>`_