diff --git a/pyproject.toml b/pyproject.toml
index 36dd7e09..d27a44f3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -60,7 +60,7 @@ dependencies = [
   'typing_extensions',
   'werkzeug',
   'WTForms-SQLAlchemy',
-  'WTForms>=3.0',
+  'WTForms>=3.1',
 
 ]
 
diff --git a/src/baseframe/forms/fields.py b/src/baseframe/forms/fields.py
index 403a1417..ce8b0a02 100644
--- a/src/baseframe/forms/fields.py
+++ b/src/baseframe/forms/fields.py
@@ -451,7 +451,7 @@ def iter_choices(self) -> ReturnIterChoices:
         """Iterate over choices."""
         if self.data:
             for user in self.data:
-                yield (user.userid, user.pickername, True)
+                yield (user.userid, user.pickername, True, {})
 
     def process_formdata(self, valuelist: t.List[str]) -> None:
         """Process incoming data from request form."""
@@ -503,7 +503,7 @@ def _value(self) -> str:
     def iter_choices(self) -> ReturnIterChoices:
         """Iterate over choices."""
         if self.data:
-            yield (self.data.userid, self.data.pickername, True)
+            yield (self.data.userid, self.data.pickername, True, {})
 
     def process_formdata(self, valuelist: t.List[str]) -> None:
         """Process incoming data from request form."""
@@ -546,7 +546,7 @@ def iter_choices(self) -> ReturnIterChoices:
         """Iterate over choices."""
         if self.data:
             for user in self.data:
-                yield (str(user), str(user), True)
+                yield (str(user), str(user), True, {})
 
     def process_formdata(self, valuelist: t.List[str]) -> None:
         """Process incoming data from request form."""
@@ -616,10 +616,10 @@ def iter_choices(self) -> ReturnIterChoices:
         """Iterate over choices."""
         if self.data:
             if isinstance(self.data, (str, GeonameidProtocol)):
-                yield (str(self.data), str(self.data), True)
+                yield (str(self.data), str(self.data), True, {})
             else:
                 for item in self.data:
-                    yield (str(item), str(item), True)
+                    yield (str(item), str(item), True, {})
 
     def process_formdata(self, valuelist: t.List[str]) -> None:
         """Process incoming data from request form."""
@@ -883,7 +883,7 @@ def iter_choices(self) -> ReturnIterChoices:
         """Iterate over choices."""
         selected_name = self.lenum[self.data].name if self.data is not None else None
         for name, title in self.choices:
-            yield (name, title, name == selected_name)
+            yield (name, title, name == selected_name, {})
 
     def process_data(self, value: t.Any) -> None:
         """Process incoming data from Python."""
diff --git a/src/baseframe/forms/typing.py b/src/baseframe/forms/typing.py
index 4517da7f..ba423df2 100644
--- a/src/baseframe/forms/typing.py
+++ b/src/baseframe/forms/typing.py
@@ -8,7 +8,9 @@
 
 FilterCallable: te.TypeAlias = t.Callable[[t.Any], t.Any]
 FilterList: te.TypeAlias = t.Iterable[FilterCallable]
-ReturnIterChoices: te.TypeAlias = t.Generator[t.Tuple[str, str, bool], None, None]
+ReturnIterChoices: te.TypeAlias = t.Generator[
+    t.Tuple[str, str, bool, t.Dict[str, t.Any]], None, None
+]
 ValidatorCallable: te.TypeAlias = t.Callable[[WTForm, WTField], None]
 ValidatorList: te.TypeAlias = t.Sequence[ValidatorCallable]
 ValidatorConstructor: te.TypeAlias = t.Callable[..., ValidatorCallable]
diff --git a/src/baseframe/forms/widgets.py b/src/baseframe/forms/widgets.py
index 4e45525a..23b8f1c3 100644
--- a/src/baseframe/forms/widgets.py
+++ b/src/baseframe/forms/widgets.py
@@ -73,8 +73,8 @@ def __call__(self, field: WTField, **kwargs: t.Any) -> Markup:
             kwargs['class'] = 'select2'
         html = [f'<select {html_params(name=field.name, **kwargs)}>']
         if field.iter_choices():
-            for val, label, selected in field.iter_choices():
-                html.append(self.render_option(val, label, selected))
+            for val, label, selected, render_kw in field.iter_choices():
+                html.append(self.render_option(val, label, selected, **render_kw))
         html.append('</select>')
         return Markup(''.join(html))