diff --git a/components/PureFlatList.js b/components/PureFlatList.js
index fd87c69..8389d5e 100644
--- a/components/PureFlatList.js
+++ b/components/PureFlatList.js
@@ -1,9 +1,23 @@
 import * as React from 'react';
 import {FlatList} from "react-native";
 
+type Props = {
+    data: Array<Object>,
+    keyExtractor: Function,
+    renderItem: Function,
+    updateData: number,
+}
 
+/**
+ * This is a pure component, meaning it will only update if a shallow comparison of state and props is different.
+ * To force the component to update, change the value of updateData.
+ */
 export default class PureFlatList extends React.PureComponent<Props>{
 
+    static defaultProps = {
+        updateData: null,
+    };
+
     render() {
         return (
             <FlatList
diff --git a/screens/Proximo/ProximoListScreen.js b/screens/Proximo/ProximoListScreen.js
index c909402..2c94575 100644
--- a/screens/Proximo/ProximoListScreen.js
+++ b/screens/Proximo/ProximoListScreen.js
@@ -318,6 +318,7 @@ class ProximoListScreen extends React.Component<Props, State> {
                     data={this.state.currentlyDisplayedData}
                     keyExtractor={this.keyExtractor}
                     renderItem={this.renderItem}
+                    updateData={this.state.currentSortMode}
                 />
             </View>
         );