diff --git a/src/components/Notification/NotificationGroups/components/Group/index.js b/src/components/Notification/NotificationGroups/components/Group/index.js
index 2053c73d..c3915b77 100644
--- a/src/components/Notification/NotificationGroups/components/Group/index.js
+++ b/src/components/Notification/NotificationGroups/components/Group/index.js
@@ -1,4 +1,5 @@
 import React, { Component } from 'react';
+import PropTypes from 'prop-types';
 import styled from 'styled-components';
 import Icon from 'components/Icon';
 import ICONS from 'config/icons';
@@ -99,4 +100,14 @@ class Group extends Component {
     }
 }
 
+Group.propTypes = {
+    type: PropTypes.string,
+    groupNotifications: PropTypes.arrayOf({
+        key: PropTypes.string,
+        type: PropTypes.string,
+        title: PropTypes.string,
+        message: PropTypes.string,
+    }),
+};
+
 export default Group;
\ No newline at end of file
diff --git a/src/components/Notification/index.js b/src/components/Notification/index.js
index 7c646164..49953fff 100644
--- a/src/components/Notification/index.js
+++ b/src/components/Notification/index.js
@@ -1,3 +1,5 @@
+/* @flow */
+
 import React from 'react';
 import { bindActionCreators } from 'redux';
 import { connect } from 'react-redux';
@@ -10,8 +12,25 @@ import { FONT_SIZE, FONT_WEIGHT } from 'config/variables';
 
 import * as NotificationActions from 'actions/NotificationActions';
 import Loader from 'components/Loader';
+import type { Action, State } from 'flowtype';
 import NotificationButton from './components/NotificationButton';
 
+type Props = {
+    key?: number,
+    notifications: $ElementType<State, 'notifications'>,
+    close: (notif?: any) => Action,
+};
+
+type NProps = {
+    type: string,
+    cancelable?: boolean;
+    title: string;
+    message?: string;
+    actions?: Array<any>;
+    close?: typeof NotificationActions.close,
+    loading?: boolean
+};
+
 const Wrapper = styled.div`
     position: relative;
     color: ${colors.TEXT_PRIMARY};
@@ -141,7 +160,7 @@ export const Notification = (props: NProps): React$Element<string> => {
     );
 };
 
-export const NotificationGroup = (props) => {
+export const NotificationGroup = (props: Props) => {
     const { notifications, close } = props;
     return notifications.map(n => (
         <Notification
@@ -163,4 +182,4 @@ export default connect(
     dispatch => ({
         close: bindActionCreators(NotificationActions.close, dispatch),
     }),
-)(NotificationGroup);
\ No newline at end of file
+)(NotificationGroup);