diff --git a/.gitignore b/.gitignore
index a75d1b15a..099aa8c43 100644
--- a/.gitignore
+++ b/.gitignore
@@ -66,3 +66,6 @@ target/
 **/.history
 
 .python-version
+
+# Virtual env
+.venv/
diff --git a/cds_ils/config.py b/cds_ils/config.py
index 2ee0a1cda..044d4fc36 100644
--- a/cds_ils/config.py
+++ b/cds_ils/config.py
@@ -31,7 +31,7 @@
 )
 from invenio_app_ils.config import CELERY_BEAT_SCHEDULE as ILS_CELERY_BEAT_SCHEDULE
 from invenio_app_ils.config import RECORDS_REST_ENDPOINTS, RECORDS_REST_FACETS
-from invenio_app_ils.documents.api import DOCUMENT_PID_TYPE, Document
+from invenio_app_ils.documents.api import DOCUMENT_PID_TYPE
 from invenio_app_ils.eitems.api import EITEM_PID_TYPE
 from invenio_app_ils.ill.api import (
     can_item_circulate,
@@ -61,6 +61,8 @@
 from invenio_records_rest.utils import deny_all
 from marshmallow.fields import Bool, List
 
+from cds_ils.documents.api import Document
+
 from .circulation.utils import circulation_cds_extension_max_count
 from .document_requests.notifications.filters import (
     document_requests_notifications_filter,
@@ -402,6 +404,13 @@ def query_params_modifier(extra_params):
 RECORDS_REST_ENDPOINTS[DOCUMENT_PID_TYPE]["record_serializers"] = {
     "application/json": "cds_ils.literature.serializers:json_v1_response"
 }
+RECORDS_REST_ENDPOINTS[DOCUMENT_PID_TYPE]["record_loaders"] = {
+    "application/json": "cds_ils.documents.loaders:document_loader"
+}
+RECORDS_REST_ENDPOINTS[DOCUMENT_PID_TYPE]["record_class"] = Document
+RECORDS_REST_ENDPOINTS[DOCUMENT_PID_TYPE][
+    "item_route"
+] = '/documents/<pid(docid, record_class="cds_ils.documents.api:Document"):pid_value>'
 RECORDS_REST_ENDPOINTS[DOCUMENT_PID_TYPE]["search_serializers"] = {
     "application/json": "cds_ils.literature.serializers:json_v1_search",
     "text/csv": "cds_ils.literature.serializers:csv_v1_search",
diff --git a/cds_ils/documents/api.py b/cds_ils/documents/api.py
new file mode 100644
index 000000000..73ec7b4f8
--- /dev/null
+++ b/cds_ils/documents/api.py
@@ -0,0 +1,12 @@
+# SPDX-FileCopyrightText: 2026 CERN.
+# SPDX-License-Identifier: MIT
+
+"""CDS-ILS Document APIs."""
+
+from invenio_app_ils.documents.api import Document as ILSDocument
+
+
+class Document(ILSDocument):
+    """CDS-ILS Document record class."""
+
+    DOCUMENT_TYPES = ILSDocument.DOCUMENT_TYPES + ["THESIS"]
diff --git a/cds_ils/documents/loaders/__init__.py b/cds_ils/documents/loaders/__init__.py
new file mode 100644
index 000000000..793667476
--- /dev/null
+++ b/cds_ils/documents/loaders/__init__.py
@@ -0,0 +1,10 @@
+# SPDX-FileCopyrightText: 2026 CERN.
+# SPDX-License-Identifier: MIT
+
+"""CDS-ILS document loaders."""
+
+from invenio_app_ils.records.loaders import ils_marshmallow_loader
+
+from .jsonschemas.document import DocumentSchemaV1
+
+document_loader = ils_marshmallow_loader(DocumentSchemaV1)
diff --git a/cds_ils/documents/loaders/jsonschemas/__init__.py b/cds_ils/documents/loaders/jsonschemas/__init__.py
new file mode 100644
index 000000000..9f77228b3
--- /dev/null
+++ b/cds_ils/documents/loaders/jsonschemas/__init__.py
@@ -0,0 +1,4 @@
+# SPDX-FileCopyrightText: 2026 CERN.
+# SPDX-License-Identifier: MIT
+
+"""CDS-ILS Document JSON loader."""
diff --git a/cds_ils/documents/loaders/jsonschemas/document.py b/cds_ils/documents/loaders/jsonschemas/document.py
new file mode 100644
index 000000000..0930dc05d
--- /dev/null
+++ b/cds_ils/documents/loaders/jsonschemas/document.py
@@ -0,0 +1,19 @@
+# SPDX-FileCopyrightText: 2026 CERN.
+# SPDX-License-Identifier: MIT
+
+"""Document schema for overwritten marshmallow loader with new document type."""
+
+from invenio_app_ils.documents.loaders.jsonschemas.document import (
+    DocumentSchemaV1 as ILSDocumentSchemaV1,
+)
+from marshmallow import fields, validate
+
+from cds_ils.documents.api import Document
+
+
+class DocumentSchemaV1(ILSDocumentSchemaV1):
+    """CDS-ILS Document schema."""
+
+    document_type = fields.Str(
+        required=True, validate=validate.OneOf(Document.DOCUMENT_TYPES)
+    )
diff --git a/docker-compose.yml b/docker-compose.yml
index 3ae631068..a14cb928f 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -18,7 +18,6 @@
 # - Message queue: RabbitMQ (exposed ports: 5672, 15672)
 # - Elasticsearch (exposed ports: 9200, 9300)
 #
-version: '2.3'
 services:
   cache:
     extends:
diff --git a/ui/src/config.js b/ui/src/config.js
index a84f76458..5ce193cc8 100644
--- a/ui/src/config.js
+++ b/ui/src/config.js
@@ -151,6 +151,15 @@ export const config = {
     authors: {
       maxEditable: 30,
     },
+    types: [
+      { value: "BOOK", text: "Book", label: "Book", order: 1 },
+      { value: "PROCEEDINGS", text: "Proceedings", label: "Proceedings", order: 2 },
+      { value: "STANDARD", text: "Standard", label: "Standard", order: 3 },
+      { value: "SERIAL_ISSUE", text: "Serial issue", label: "Serial issue", order: 4 },
+      { value: "ARTICLE", text: "Article", label: "Article", order: 5 },
+      { value: "MULTIMEDIA", text: "Multimedia", label: "Multimedia", order: 6 },
+      { value: "THESIS", text: "Thesis", label: "Thesis", order: 7 },
+    ],
   },
   ILL_BORROWING_REQUESTS: {
     defaultType: "PHYSICAL_COPY",