diff --git a/CHANGELOG.md b/CHANGELOG.md
index 61db8e13..e76d642c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,8 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+- [#214](https://github.com/os2display/display-api-service/pull/214)
+  - Updated endSessionUrl to be nullable.
 - [#193](https://github.com/os2display/display-api-service/pull/193)
   - Adds support for interactive slides.
   - Adds interactivity for creating quick bookings from a slide through Microsoft Graph.
diff --git a/README.md b/README.md
index 3a24753b..ce4df7a3 100644
--- a/README.md
+++ b/README.md
@@ -89,7 +89,7 @@ classDiagram
 
 ## Development Setup
 
-A `docker-compose.yml` file with a PHP 8.0 image is included in this project.
+A `docker-compose.yml` file with a PHP 8.3 image is included in this project.
 To install the dependencies you can run
 
 ```shell
diff --git a/src/Controller/AuthOidcController.php b/src/Controller/AuthOidcController.php
index c913d880..2cdb31bb 100644
--- a/src/Controller/AuthOidcController.php
+++ b/src/Controller/AuthOidcController.php
@@ -72,6 +72,13 @@ public function getUrls(Request $request, SessionInterface $session): Response
             $session->set('oauth2state', $state);
             $session->set('oauth2nonce', $nonce);
 
+            // We allow end session endpoint to not be set.
+            try {
+                $endSessionUrl = $provider->getEndSessionUrl();
+            } catch (ItkOpenIdConnectException $e) {
+                $endSessionUrl = null;
+            }
+
             $data = [
                 'authorizationUrl' => $provider->getAuthorizationUrl([
                     'state' => $state,
@@ -79,7 +86,7 @@ public function getUrls(Request $request, SessionInterface $session): Response
                     'response_type' => 'code',
                     'scope' => 'openid email profile',
                 ]),
-                'endSessionUrl' => $provider->getEndSessionUrl(),
+                'endSessionUrl' => $endSessionUrl,
             ];
 
             return new JsonResponse($data);