diff --git a/packages/ra-ui-materialui/src/form/SimpleForm.js b/packages/ra-ui-materialui/src/form/SimpleForm.js
index a79896d6506..d25a92089f1 100644
--- a/packages/ra-ui-materialui/src/form/SimpleForm.js
+++ b/packages/ra-ui-materialui/src/form/SimpleForm.js
@@ -63,6 +63,28 @@ const SimpleForm = ({ initialValues, defaultValue, saving, ...props }) => {
     );
 };
 
+SimpleForm.propTypes = {
+    basePath: PropTypes.string,
+    children: PropTypes.node,
+    className: PropTypes.string,
+    defaultValue: PropTypes.oneOfType([PropTypes.object, PropTypes.func]), // @deprecated
+    initialValues: PropTypes.oneOfType([PropTypes.object, PropTypes.func]),
+    record: PropTypes.object,
+    redirect: PropTypes.oneOfType([
+        PropTypes.string,
+        PropTypes.bool,
+        PropTypes.func,
+    ]),
+    resource: PropTypes.string,
+    save: PropTypes.func,
+    saving: PropTypes.oneOfType([PropTypes.object, PropTypes.bool]),
+    submitOnEnter: PropTypes.bool,
+    toolbar: PropTypes.element,
+    undoable: PropTypes.bool,
+    validate: PropTypes.func,
+    version: PropTypes.number,
+};
+
 const defaultSubscription = {
     submitting: true,
     pristine: true,
diff --git a/packages/ra-ui-materialui/src/form/TabbedForm.js b/packages/ra-ui-materialui/src/form/TabbedForm.js
index 3a36540688f..da520e28baa 100644
--- a/packages/ra-ui-materialui/src/form/TabbedForm.js
+++ b/packages/ra-ui-materialui/src/form/TabbedForm.js
@@ -78,6 +78,35 @@ const TabbedForm = ({ initialValues, defaultValue, saving, ...props }) => {
     );
 };
 
+TabbedForm.propTypes = {
+    basePath: PropTypes.string,
+    children: PropTypes.node,
+    className: PropTypes.string,
+    classes: PropTypes.object,
+    defaultValue: PropTypes.oneOfType([PropTypes.object, PropTypes.func]), // @deprecated
+    initialValues: PropTypes.oneOfType([PropTypes.object, PropTypes.func]),
+    location: PropTypes.object,
+    match: PropTypes.object,
+    record: PropTypes.object,
+    redirect: PropTypes.oneOfType([
+        PropTypes.string,
+        PropTypes.bool,
+        PropTypes.func,
+    ]),
+    resource: PropTypes.string,
+    save: PropTypes.func, // the handler defined in the parent, which triggers the REST submission
+    saving: PropTypes.oneOfType([PropTypes.object, PropTypes.bool]),
+    submitOnEnter: PropTypes.bool,
+    tabs: PropTypes.element.isRequired,
+    tabsWithErrors: PropTypes.arrayOf(PropTypes.string),
+    toolbar: PropTypes.element,
+    translate: PropTypes.func,
+    undoable: PropTypes.bool,
+    validate: PropTypes.func,
+    value: PropTypes.number,
+    version: PropTypes.number,
+};
+
 const defaultSubscription = {
     submitting: true,
     pristine: true,
diff --git a/packages/ra-ui-materialui/src/list/DatagridLoading.js b/packages/ra-ui-materialui/src/list/DatagridLoading.js
index 9ca6eb70f29..69828ecbfab 100644
--- a/packages/ra-ui-materialui/src/list/DatagridLoading.js
+++ b/packages/ra-ui-materialui/src/list/DatagridLoading.js
@@ -1,4 +1,5 @@
 import React, { memo } from 'react';
+import PropTypes from 'prop-types';
 import Table from '@material-ui/core/Table';
 import TableCell from '@material-ui/core/TableCell';
 import TableHead from '@material-ui/core/TableHead';
@@ -106,4 +107,14 @@ const DatagridLoading = ({
     </Table>
 );
 
+DatagridLoading.propTypes = {
+    classes: PropTypes.object,
+    className: PropTypes.string,
+    expand: PropTypes.oneOfType([PropTypes.element, PropTypes.elementType]),
+    hasBulkActions: PropTypes.bool,
+    nbChildren: PropTypes.number,
+    nbFakeLines: PropTypes.number,
+    size: PropTypes.oneOf(['small', 'medium']),
+};
+
 export default memo(DatagridLoading);