diff --git a/invenio_rdm_records/assets/semantic-ui/js/invenio_rdm_records/src/deposit/api/DepositApiClient.js b/invenio_rdm_records/assets/semantic-ui/js/invenio_rdm_records/src/deposit/api/DepositApiClient.js
index 03b92eebd..0d35c2c8d 100644
--- a/invenio_rdm_records/assets/semantic-ui/js/invenio_rdm_records/src/deposit/api/DepositApiClient.js
+++ b/invenio_rdm_records/assets/semantic-ui/js/invenio_rdm_records/src/deposit/api/DepositApiClient.js
@@ -286,7 +286,7 @@ export class DepositFileApiClient {
       withCredentials: true,
       xsrfCookieName: "csrftoken",
       xsrfHeaderName: "X-CSRFToken",
-      headers: this.apiHeaders.json,
+      headers: this.apiHeaders["vnd+json"],
     };
     this.axiosWithConfig = axios.create(apiConfig);
   }
diff --git a/invenio_rdm_records/assets/semantic-ui/js/invenio_rdm_records/src/deposit/fields/AffiliationsField/AffiliationsField.js b/invenio_rdm_records/assets/semantic-ui/js/invenio_rdm_records/src/deposit/fields/AffiliationsField/AffiliationsField.js
index 56ca70b3d..3ac77ca87 100644
--- a/invenio_rdm_records/assets/semantic-ui/js/invenio_rdm_records/src/deposit/fields/AffiliationsField/AffiliationsField.js
+++ b/invenio_rdm_records/assets/semantic-ui/js/invenio_rdm_records/src/deposit/fields/AffiliationsField/AffiliationsField.js
@@ -35,7 +35,7 @@ export class AffiliationsField extends Component {
               fieldPath={fieldPath}
               suggestionAPIUrl="/api/affiliations"
               suggestionAPIHeaders={{
-                Accept: "application/json",
+                Accept: "application/vnd.inveniordm.v1+json",
               }}
               initialSuggestions={getIn(values, fieldPath, [])}
               serializeSuggestions={this.serializeAffiliations}
diff --git a/invenio_rdm_records/oaiserver/resources/config.py b/invenio_rdm_records/oaiserver/resources/config.py
index d1245c0e9..76c316250 100644
--- a/invenio_rdm_records/oaiserver/resources/config.py
+++ b/invenio_rdm_records/oaiserver/resources/config.py
@@ -68,3 +68,10 @@ class OAIPMHServerResourceConfig(ResourceConfig, ConfiguratorMixin):
     request_search_args = OAIPMHServerSearchRequestArgsSchema
 
     error_handlers = oaipmh_error_handlers
+
+    response_handlers = {
+        "application/vnd.inveniordm.v1+json": ResourceConfig.response_handlers[
+            "application/json"
+        ],
+        **ResourceConfig.response_handlers,
+    }
diff --git a/invenio_rdm_records/resources/config.py b/invenio_rdm_records/resources/config.py
index 26f1614fe..c4dd87072 100644
--- a/invenio_rdm_records/resources/config.py
+++ b/invenio_rdm_records/resources/config.py
@@ -264,6 +264,13 @@ class RDMDraftFilesResourceConfig(FileResourceConfig, ConfiguratorMixin):
     blueprint_name = "draft_files"
     url_prefix = "/records/<pid_value>/draft"
 
+    response_handlers = {
+        "application/vnd.inveniordm.v1+json": FileResourceConfig.response_handlers[
+            "application/json"
+        ],
+        **FileResourceConfig.response_handlers,
+    }
+
 
 class RDMRecordMediaFilesResourceConfig(FileResourceConfig, ConfiguratorMixin):
     """Bibliographic record files resource config."""
@@ -295,6 +302,13 @@ class RDMRecordMediaFilesResourceConfig(FileResourceConfig, ConfiguratorMixin):
         ),
     }
 
+    response_handlers = {
+        "application/vnd.inveniordm.v1+json": FileResourceConfig.response_handlers[
+            "application/json"
+        ],
+        **FileResourceConfig.response_handlers,
+    }
+
 
 #
 # Draft files
@@ -314,6 +328,13 @@ class RDMDraftMediaFilesResourceConfig(FileResourceConfig, ConfiguratorMixin):
         "list-archive": "/media-files-archive",
     }
 
+    response_handlers = {
+        "application/vnd.inveniordm.v1+json": FileResourceConfig.response_handlers[
+            "application/json"
+        ],
+        **FileResourceConfig.response_handlers,
+    }
+
 
 #
 # Parent Record Links
@@ -366,7 +387,10 @@ class RDMParentRecordLinksResourceConfig(RecordResourceConfig, ConfiguratorMixin
     }
 
     response_handlers = {
-        "application/json": ResponseHandler(JSONSerializer(), headers=etag_headers)
+        "application/vnd.inveniordm.v1+json": RecordResourceConfig.response_handlers[
+            "application/json"
+        ],
+        **RecordResourceConfig.response_handlers,
     }
 
     error_handlers = record_links_error_handlers
@@ -396,7 +420,10 @@ class RDMParentGrantsResourceConfig(RecordResourceConfig, ConfiguratorMixin):
     request_extra_args = {"expand": ma.fields.Bool()}
 
     response_handlers = {
-        "application/json": ResponseHandler(JSONSerializer(), headers=etag_headers)
+        "application/vnd.inveniordm.v1+json": RecordResourceConfig.response_handlers[
+            "application/json"
+        ],
+        **RecordResourceConfig.response_handlers,
     }
 
     error_handlers = grants_error_handlers
@@ -453,6 +480,13 @@ class RDMRecordRequestsResourceConfig(ResourceConfig, ConfiguratorMixin):
         "expand": ma.fields.Boolean(),
     }
 
+    response_handlers = {
+        "application/vnd.inveniordm.v1+json": ResourceConfig.response_handlers[
+            "application/json"
+        ],
+        **ResourceConfig.response_handlers,
+    }
+
 
 #
 # IIIF
@@ -491,7 +525,12 @@ class IIIFResourceConfig(ResourceConfig, ConfiguratorMixin):
         "If-Modified-Since": ma.fields.DateTime(),
     }
 
-    response_handler = {"application/json": ResponseHandler(JSONSerializer())}
+    response_handlers = {
+        "application/vnd.inveniordm.v1+json": ResourceConfig.response_handlers[
+            "application/json"
+        ],
+        **ResourceConfig.response_handlers,
+    }
 
     supported_formats = {
         "gif": "image/gif",