diff --git a/SCHEMATA/changelog.md b/SCHEMATA/changelog.md
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@@ -1,24 +1,31 @@
 # Changelog - Schema
 
-- From version 0.2.0 to 0.2.1 (2023-09-22):
-   - _contact.role_  changed to an array of strings _contact.roles_. The new roles are aligned with the [CRediT](https://credit.niso.org/) taxonomy.
+- From version 0.2.0 to 0.2.1 (2023-09-30):
+
+  - `contact.role` changed to an array of strings `contact.roles`. The new roles are aligned with the [CRediT](https://credit.niso.org/) taxonomy.
+
 - From version 0.1.9 to 0.2.0 (2023-09-22):
-   - _cooperation_ added as a third category of _relation_type_ in _related_institutions_
-   - _date.from_ was changed from an optional to a required field
+
+  - `cooperation` added as a third category of `relation_type` in `related_institutions`.
+  - `date.from` was changed from an optional to a required field.
+
 - From version 0.1.8 to 0.1.9 (2023-03-07):
-   - simplification of the _research_data_ element by merging _raw_, _refined_ and _final_ sections into one key.
-   - _host_institutions_ replaced with _related_institutions_ with _relation_type_ as an additional key.
-   - _relations_ renamed to _related_entities_.
+
+  - Simplification of the `research_data` element by merging `raw`, `refined`, and `final` sections into one key.
+  - `host_institutions` replaced with `related_institutions` with `relation_type` as an additional key.
+  - `relations` renamed to `related_entities`.
+
 - From version 0.1.7 to 0.1.8 (2023-01-20):
-   - _record_metadata_ simplified by changing the object _record_modified_ to a string _last_edited_on_
-   - _relations_ element simplified by:
-     - allowing only entries with a uuid
-     - moving parent organizations to a new separate element _host_institutions_
-     - removing all other entries without a uuid
-   - _research_data_ element simplified by changing the _access_ object to a single number _open_access_
-- From version 0.1.6 to 0.1.7 (2023-01-13):
-   - _Topic_relations_ (dh, nls, meta, rdm, infrastructure) were removed, since the topic related information is now covered by the _keywords_ section.
-   - _Sustainability_plan_ added as a Boolean value to the _research_data_ section.
-   - _Cooperation_ added a new relation type next to _sibling, child_ and _parent_.
 
+  - `record_metadata` simplified by changing the object `record_modified` to a string `last_edited_on`.
+  - `relations` element simplified by:
+    - allowing only entries with a uuid
+    - moving parent organizations to a new separate element `host_institutions`
+    - removing all other entries without a uuid
+  - `research_data` element simplified by changing the `access` object to a single number `open_access`.
+
+- From version 0.1.6 to 0.1.7 (2023-01-13):
 
+  - `topic_relations` (`dh`, `nls`, `meta`, `rdm`, `infrastructure`) were removed, since topic-related information is now covered by the `keywords` section.
+  - `sustainability_plan` added as a boolean value to the `research_data` section.
+  - `cooperation` added as a new relation type next to `sibling`, `child`, and `parent`.