diff --git a/php/psalm-baseline.xml b/php/psalm-baseline.xml
index 2771cd06..b5d05c78 100644
--- a/php/psalm-baseline.xml
+++ b/php/psalm-baseline.xml
@@ -1,2 +1,2 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<files psalm-version="5.23.1@8471a896ccea3526b26d082f4461eeea467f10a4"/>
+<files psalm-version="5.24.0@462c80e31c34e58cc4f750c656be3927e80e550e"/>
diff --git a/php/src/Auth/AuthManager.php b/php/src/Auth/AuthManager.php
index 88bdab10..a4bc96b6 100644
--- a/php/src/Auth/AuthManager.php
+++ b/php/src/Auth/AuthManager.php
@@ -7,7 +7,7 @@ use AIO\Data\DataConst;
 use \DateTime;
 
 class AuthManager {
-    private const SESSION_KEY = 'aio_authenticated';
+    private const string SESSION_KEY = 'aio_authenticated';
     private ConfigurationManager $configurationManager;
 
     public function __construct(ConfigurationManager $configurationManager) {
diff --git a/php/src/Controller/DockerController.php b/php/src/Controller/DockerController.php
index 64285e05..6d55bc94 100644
--- a/php/src/Controller/DockerController.php
+++ b/php/src/Controller/DockerController.php
@@ -13,7 +13,7 @@ class DockerController
 {
     private DockerActionManager $dockerActionManager;
     private ContainerDefinitionFetcher $containerDefinitionFetcher;
-    private const TOP_CONTAINER = 'nextcloud-aio-apache';
+    private const string TOP_CONTAINER = 'nextcloud-aio-apache';
     private ConfigurationManager $configurationManager;
 
     public function __construct(
diff --git a/php/src/Data/ConfigurationManager.php b/php/src/Data/ConfigurationManager.php
index a4693330..69e9bc6e 100644
--- a/php/src/Data/ConfigurationManager.php
+++ b/php/src/Data/ConfigurationManager.php
@@ -305,7 +305,7 @@ class ConfigurationManager
 
             if (empty($dnsRecordIP)) {
                 $record = dns_get_record($domain, DNS_AAAA);
-                if (!empty($record[0]['ipv6'])) {
+                if (isset($record[0]['ipv6']) && !empty($record[0]['ipv6'])) {
                     $dnsRecordIP = $record[0]['ipv6'];
                 }
             }
diff --git a/php/src/Docker/DockerActionManager.php b/php/src/Docker/DockerActionManager.php
index 5b65f4b0..4e56e5f0 100644
--- a/php/src/Docker/DockerActionManager.php
+++ b/php/src/Docker/DockerActionManager.php
@@ -19,7 +19,7 @@ use http\Env\Response;
 
 class DockerActionManager
 {
-    private const API_VERSION = 'v1.41';
+    private const string API_VERSION = 'v1.41';
     private \GuzzleHttp\Client $guzzleClient;
     private ConfigurationManager $configurationManager;
     private ContainerDefinitionFetcher $containerDefinitionFetcher;