diff --git a/src/components/TestToolMenu.js b/src/components/TestToolMenu.js
index 474e4c9bb10c..9b35373c7fe9 100644
--- a/src/components/TestToolMenu.js
+++ b/src/components/TestToolMenu.js
@@ -8,6 +8,7 @@ import Text from './Text';
 import * as User from '../libs/actions/User';
 import * as Network from '../libs/actions/Network';
 import * as Session from '../libs/actions/Session';
+import * as Report from '../libs/actions/Report';
 import ONYXKEYS from '../ONYXKEYS';
 import Button from './Button';
 import TestToolRow from './TestToolRow';
@@ -94,6 +95,15 @@ function TestToolMenu(props) {
                     onPress={() => Session.invalidateCredentials()}
                 />
             </TestToolRow>
+
+            {/* Mark all chats as "read". */}
+            <TestToolRow title="Mark all chats as read">
+                <Button
+                    small
+                    text="💥"
+                    onPress={() => Report.markAllChatsAsRead()}
+                />
+            </TestToolRow>
         </>
     );
 }
diff --git a/src/libs/actions/Report.js b/src/libs/actions/Report.js
index c9f3ba6318db..b8248c0551f7 100644
--- a/src/libs/actions/Report.js
+++ b/src/libs/actions/Report.js
@@ -2278,7 +2278,22 @@ function searchInServer(searchInput) {
     debouncedSearchInServer(searchInput);
 }
 
+/**
+ * Test utility used to mark chats as read.
+ */
+function markAllChatsAsRead() {
+    // Get all the chats that are unread
+    _.each(currentReportData, (report, reportID) => {
+        if (!ReportUtils.isUnread(report)) {
+            return;
+        }
+
+        readNewestAction(reportID);
+    });
+}
+
 export {
+    markAllChatsAsRead,
     searchInServer,
     addComment,
     addAttachment,