diff --git a/rdmo/core/xml.py b/rdmo/core/xml.py
index 6e2c53b82d..5327969433 100644
--- a/rdmo/core/xml.py
+++ b/rdmo/core/xml.py
@@ -2,6 +2,7 @@
 import re
 
 import defusedxml.ElementTree as ET
+from packaging.version import parse
 
 log = logging.getLogger(__name__)
 
@@ -117,12 +118,15 @@ def strip_ns(tag, ns_map):
 
 
 def convert_elements(elements, version):
-    # in future versions, this method can be extended
-    # using packaging.version.parse
-    if version is None:
-        return convert_legacy_elements(elements)
-    else:
-        return elements
+    parsed_version = parse('1.11.0') if version is None else parse(version)
+
+    if parsed_version < parse('2.0.0'):
+        elements = convert_legacy_elements(elements)
+
+    if parsed_version < parse('2.1.0'):
+        elements = convert_additional_input(elements)
+
+    return elements
 
 
 def convert_legacy_elements(elements):
@@ -211,6 +215,18 @@ def convert_legacy_elements(elements):
     return elements
 
 
+def convert_additional_input(elements):
+    for uri, element in elements.items():
+        if element['model'] == 'options.option':
+            additional_input = element.get('additional_input')
+            if additional_input == 'True':
+                element['additional_input'] = 'text'
+            else:
+                element['additional_input'] = ''
+
+    return elements
+
+
 def order_elements(elements):
     ordered_elements = {}
     for uri, element in elements.items():
diff --git a/rdmo/management/assets/js/actions/configActions.js b/rdmo/management/assets/js/actions/configActions.js
index e3c57f2452..baf9203e5f 100644
--- a/rdmo/management/assets/js/actions/configActions.js
+++ b/rdmo/management/assets/js/actions/configActions.js
@@ -17,12 +17,13 @@ export function fetchConfig() {
     CoreApi.fetchSettings(),
     CoreApi.fetchSites(),
     ManagementApi.fetchMeta(),
+    OptionsApi.fetchAdditionalInputs(),
     OptionsApi.fetchProviders(),
     QuestionsApi.fetchValueTypes(),
     QuestionsApi.fetchWidgetTypes()
-  ]).then(([relations, groups, settings, sites, meta, providers,
+  ]).then(([relations, groups, settings, sites, meta, additionalInputs, providers,
             valueTypes, widgetTypes]) => dispatch(fetchConfigSuccess({
-    relations, groups, settings, sites, meta, providers, valueTypes, widgetTypes
+    relations, groups, settings, sites, meta, additionalInputs, providers, valueTypes, widgetTypes
   })))
 }
 
diff --git a/rdmo/management/assets/js/api/OptionsApi.js b/rdmo/management/assets/js/api/OptionsApi.js
index 550e050bf3..30e5545a84 100644
--- a/rdmo/management/assets/js/api/OptionsApi.js
+++ b/rdmo/management/assets/js/api/OptionsApi.js
@@ -51,6 +51,10 @@ class OptionsApi extends BaseApi {
     return this.delete(`/api/v1/options/options/${option.id}/`)
   }
 
+  static fetchAdditionalInputs() {
+    return this.get('/api/v1/options/additionalinputs/')
+  }
+
   static fetchProviders() {
     return this.get('/api/v1/options/providers/')
   }
diff --git a/rdmo/management/assets/js/components/edit/EditOption.js b/rdmo/management/assets/js/components/edit/EditOption.js
index 9f011d6fbc..fcb1cea748 100644
--- a/rdmo/management/assets/js/components/edit/EditOption.js
+++ b/rdmo/management/assets/js/components/edit/EditOption.js
@@ -4,6 +4,7 @@ import { Tabs, Tab } from 'react-bootstrap'
 import get from 'lodash/get'
 
 import Checkbox from './common/Checkbox'
+import Radio from './common/Radio'
 import Select from './common/Select'
 import Text from './common/Text'
 import Textarea from './common/Textarea'
@@ -19,7 +20,7 @@ import useDeleteModal from '../../hooks/useDeleteModal'
 
 const EditOption = ({ config, option, elements, elementActions }) => {
 
-  const { sites } = config
+  const { additionalInputs, sites } = config
   const { elementAction, parent } = elements
 
   const updateOption = (key, value) => elementActions.updateElement(option, {[key]: value})
@@ -81,10 +82,6 @@ const EditOption = ({ config, option, elements, elementActions }) => {
             <Checkbox config={config} element={option} field="locked"
                       onChange={updateOption} />
           </div>
-          <div className="col-sm-6">
-            <Checkbox config={config} element={option} field="additional_input"
-                      onChange={updateOption} />
-          </div>
         </div>
 
         <Tabs id="#option-tabs" defaultActiveKey={0} animation={false}>
@@ -102,6 +99,9 @@ const EditOption = ({ config, option, elements, elementActions }) => {
           }
         </Tabs>
 
+        <Radio config={config} element={option} field="additional_input"
+               options={additionalInputs} onChange={updateOption} />
+
         {get(config, 'settings.multisite') && <Select config={config} element={option} field="editors"
                                                       options={sites} onChange={updateOption} isMulti />}
       </div>
diff --git a/rdmo/management/assets/js/components/edit/common/Radio.js b/rdmo/management/assets/js/components/edit/common/Radio.js
new file mode 100644
index 0000000000..6e2c530e97
--- /dev/null
+++ b/rdmo/management/assets/js/components/edit/common/Radio.js
@@ -0,0 +1,59 @@
+import React from 'react'
+import PropTypes from 'prop-types'
+import classNames from 'classnames'
+import isEmpty from 'lodash/isEmpty'
+import isNil from 'lodash/isNil'
+import get from 'lodash/get'
+
+import { getId, getLabel, getHelp } from 'rdmo/management/assets/js/utils/forms'
+
+const Radio = ({ config, element, field, options, onChange }) => {
+  const id = getId(element, field),
+        label = getLabel(config, element, field),
+        help = getHelp(config, element, field),
+        warnings = get(element, ['warnings', field]),
+        errors = get(element, ['errors', field])
+
+  const className = classNames({
+    'form-group': true,
+    'has-warning': !isEmpty(warnings),
+    'has-error': !isEmpty(errors)
+  })
+
+  const value = isNil(element[field]) ? '' : element[field]
+
+  return (
+    <div className={className}>
+      <label className="control-label" htmlFor={id}>{label}</label>
+
+      <div>
+      {
+        options.map((option, index) => (
+          <label key={index} className="radio-inline">
+            <input type="radio" name="inlineRadioOptions" disabled={element.read_only}
+                   checked={value === option.id}
+                   value={option.id} onChange={event => onChange(field, event.target.value)}/>
+            <span>{option.text}</span>
+          </label>
+        ))
+      }
+      </div>
+
+      {help && <p className="help-block">{help}</p>}
+
+      {errors && <ul className="help-block list-unstyled">
+        {errors.map((error, index) => <li key={index}>{error}</li>)}
+      </ul>}
+    </div>
+  )
+}
+
+Radio.propTypes = {
+  config: PropTypes.object,
+  element: PropTypes.object,
+  field: PropTypes.string,
+  options: PropTypes.array,
+  onChange: PropTypes.func
+}
+
+export default Radio
diff --git a/rdmo/options/imports.py b/rdmo/options/imports.py
index 757fc34778..47ee721529 100644
--- a/rdmo/options/imports.py
+++ b/rdmo/options/imports.py
@@ -62,7 +62,7 @@ def import_option(element, save=False, user=None):
 
     set_common_fields(option, element)
 
-    option.additional_input = element.get('additional_input') or False
+    option.additional_input = element.get('additional_input')
 
     set_lang_field(option, 'text', element)
 
diff --git a/rdmo/options/migrations/0032_alter_option_additional_input.py b/rdmo/options/migrations/0032_alter_option_additional_input.py
new file mode 100644
index 0000000000..5bebaf9327
--- /dev/null
+++ b/rdmo/options/migrations/0032_alter_option_additional_input.py
@@ -0,0 +1,27 @@
+# Generated by Django 4.2.5 on 2023-10-01 12:55
+
+from django.db import migrations, models
+
+
+def run_data_migration(apps, schema_editor):
+    Option = apps.get_model('options', 'Option')
+
+    for option in Option.objects.all():
+        option.additional_input = 'text' if option.additional_input == 'True' else ''
+        option.save()
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('options', '0031_add_editors'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='option',
+            name='additional_input',
+            field=models.CharField(blank=True, choices=[('', 'None'), ('text', 'Text'), ('textarea', 'Textarea')], default=False, help_text='Designates whether an additional input is possible for this option.', max_length=256, verbose_name='Additional input'),
+        ),
+        migrations.RunPython(run_data_migration),
+    ]
diff --git a/rdmo/options/models.py b/rdmo/options/models.py
index a450cf64ad..9cfb34c1c6 100644
--- a/rdmo/options/models.py
+++ b/rdmo/options/models.py
@@ -147,6 +147,15 @@ def __str__(self):
 
 class Option(models.Model, TranslationMixin):
 
+    ADDITIONAL_INPUT_NONE = ''
+    ADDITIONAL_INPUT_TEXT = 'text'
+    ADDITIONAL_INPUT_TEXTAREA = 'textarea'
+    ADDITIONAL_INPUT_CHOICES = (
+        (ADDITIONAL_INPUT_NONE, _('None')),
+        (ADDITIONAL_INPUT_TEXT, _('Text')),
+        (ADDITIONAL_INPUT_TEXTAREA, _('Textarea'))
+    )
+
     uri = models.URLField(
         max_length=800, blank=True,
         verbose_name=_('URI'),
@@ -202,8 +211,8 @@ class Option(models.Model, TranslationMixin):
         verbose_name=_('Text (quinary)'),
         help_text=_('The text for this option in the quinary language.')
     )
-    additional_input = models.BooleanField(
-        default=False,
+    additional_input = models.CharField(
+        max_length=256, blank=True, default=False, choices=ADDITIONAL_INPUT_CHOICES,
         verbose_name=_('Additional input'),
         help_text=_('Designates whether an additional input is possible for this option.')
     )
diff --git a/rdmo/options/urls/v1.py b/rdmo/options/urls/v1.py
index 88e879bb23..1c7980aefe 100644
--- a/rdmo/options/urls/v1.py
+++ b/rdmo/options/urls/v1.py
@@ -2,13 +2,14 @@
 
 from rest_framework import routers
 
-from ..viewsets import OptionSetViewSet, OptionViewSet, ProviderViewSet
+from ..viewsets import AdditionalInputsViewSet, OptionSetViewSet, OptionViewSet, ProviderViewSet
 
 app_name = 'v1-options'
 
 router = routers.DefaultRouter()
 router.register(r'optionsets', OptionSetViewSet, basename='optionset')
 router.register(r'options', OptionViewSet, basename='option')
+router.register(r'additionalinputs', AdditionalInputsViewSet, basename='additionalinput')
 router.register(r'providers', ProviderViewSet, basename='provider')
 
 urlpatterns = [
diff --git a/rdmo/options/viewsets.py b/rdmo/options/viewsets.py
index 804e003fcc..1922d7f223 100644
--- a/rdmo/options/viewsets.py
+++ b/rdmo/options/viewsets.py
@@ -141,6 +141,11 @@ def detail_export(self, request, pk=None, export_format='xml'):
             )
 
 
+class AdditionalInputsViewSet(ChoicesViewSet):
+    permission_classes = (IsAuthenticated, )
+    queryset = Option.ADDITIONAL_INPUT_CHOICES
+
+
 class ProviderViewSet(ChoicesViewSet):
     permission_classes = (IsAuthenticated, )
     queryset = settings.OPTIONSET_PROVIDERS
diff --git a/rdmo/projects/static/projects/css/project_questions.scss b/rdmo/projects/static/projects/css/project_questions.scss
index f4141d99b9..3728c891cd 100644
--- a/rdmo/projects/static/projects/css/project_questions.scss
+++ b/rdmo/projects/static/projects/css/project_questions.scss
@@ -195,6 +195,13 @@
         margin: 0;
     }
 
+    .radio-control,
+    .checkbox-control {
+        label {
+            width: 100%;
+        }
+    }
+
     .file-control {
         display: block;
         width: 100%;
diff --git a/rdmo/projects/templates/projects/project_questions_form_group_radio.html b/rdmo/projects/templates/projects/project_questions_form_group_radio.html
index 29e498e8c7..d521ca91b9 100644
--- a/rdmo/projects/templates/projects/project_questions_form_group_radio.html
+++ b/rdmo/projects/templates/projects/project_questions_form_group_radio.html
@@ -30,7 +30,14 @@
                             <span>{$ option.text $}</span><span ng-show="option.additional_input">:</span>
 
                             <input class="form-control input-sm" type="text"
-                                ng-show="option.additional_input"
+                                ng-show="option.additional_input == 'text'"
+                                ng-model="value.additional_input[option.id]"
+                                ng-change="value.selected = option.id.toString(); service.changed(value, true)"
+                                ng-focus="value.selected = option.id.toString()"
+                                ng-disabled="service.project.read_only" />
+
+                            <textarea class="form-control input-sm" type="text" rows="4"
+                                ng-show="option.additional_input == 'textarea'"
                                 ng-model="value.additional_input[option.id]"
                                 ng-change="value.selected = option.id.toString(); service.changed(value, true)"
                                 ng-focus="value.selected = option.id.toString()"