diff --git a/Build/phpstan/phpstan-baseline.neon b/Build/phpstan/phpstan-baseline.neon
index f713a4189bf94a0823e07383ba61d75bb96beafb..2bdf867b680d467911e742ae33d41c7f6d70e4a5 100644
--- a/Build/phpstan/phpstan-baseline.neon
+++ b/Build/phpstan/phpstan-baseline.neon
@@ -60,6 +60,11 @@ parameters:
 			count: 1
 			path: ../../typo3/sysext/backend/Classes/Form/Behavior/UpdateValueOnFieldChange.php
 
+		-
+			message: "#^Offset 'onChange' on array\\{label\\: string, config\\: mixed, children\\: mixed, onChange\\: mixed, description\\?\\: mixed\\} in isset\\(\\) always exists and is not nullable\\.$#"
+			count: 1
+			path: ../../typo3/sysext/backend/Classes/Form/Container/FlexFormElementContainer.php
+
 		-
 			message: "#^Offset 'isInlineDefaultLang…' on array on left side of \\?\\? always exists and is not nullable\\.$#"
 			count: 1
@@ -125,6 +130,11 @@ parameters:
 			count: 1
 			path: ../../typo3/sysext/backend/Classes/RecordList/DatabaseRecordList.php
 
+		-
+			message: "#^Variable \\$translations on left side of \\?\\? always exists and is not nullable\\.$#"
+			count: 1
+			path: ../../typo3/sysext/backend/Classes/RecordList/DatabaseRecordList.php
+
 		-
 			message: "#^Method TYPO3\\\\CMS\\\\Backend\\\\Routing\\\\PreviewUriBuilder\\:\\:create\\(\\) should return static\\(TYPO3\\\\CMS\\\\Backend\\\\Routing\\\\PreviewUriBuilder\\) but returns object\\.$#"
 			count: 1
@@ -2950,6 +2960,11 @@ parameters:
 			count: 1
 			path: ../../typo3/sysext/lowlevel/Classes/Controller/DatabaseIntegrityController.php
 
+		-
+			message: "#^Variable \\$var on left side of \\?\\? always exists and is not nullable\\.$#"
+			count: 5
+			path: ../../typo3/sysext/lowlevel/Classes/Controller/DatabaseIntegrityController.php
+
 		-
 			message: "#^Negated boolean expression is always false\\.$#"
 			count: 1
diff --git a/composer.json b/composer.json
index 2795dfb1542c0e130867caefc65086ba44825b37..7e6df1d516f58268b8b3a3f8498b8e3ab01a2481 100644
--- a/composer.json
+++ b/composer.json
@@ -112,7 +112,7 @@
 		"friendsofphp/php-cs-fixer": "^3.46",
 		"friendsoftypo3/phpstan-typo3": "^0.9.0",
 		"php-webdriver/webdriver": "^1.14.0",
-		"phpstan/phpstan": "^1.10.48",
+		"phpstan/phpstan": "^1.10.51",
 		"phpstan/phpstan-phpunit": "^1.3.15",
 		"phpunit/phpunit": "^10.5.5",
 		"sokil/php-isocodes-db-i18n": "^4.0.18",
diff --git a/composer.lock b/composer.lock
index 87f55a15a283ef734de25d9b94eb68ce4209929d..2de39659d09980cd885fa38b1668fd376837c70c 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "e04d4102e6fe987650c692e129142831",
+    "content-hash": "851b52fceb635c0b1bcd2acb012f1029",
     "packages": [
         {
             "name": "bacon/bacon-qr-code",
@@ -6697,16 +6697,16 @@
         },
         {
             "name": "phpstan/phpstan",
-            "version": "1.10.48",
+            "version": "1.10.54",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpstan/phpstan.git",
-                "reference": "087ed4b5f4a7a6e8f3bbdfbfe98ce5c181380bc6"
+                "reference": "3e25f279dada0adc14ffd7bad09af2e2fc3523bb"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/087ed4b5f4a7a6e8f3bbdfbfe98ce5c181380bc6",
-                "reference": "087ed4b5f4a7a6e8f3bbdfbfe98ce5c181380bc6",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/3e25f279dada0adc14ffd7bad09af2e2fc3523bb",
+                "reference": "3e25f279dada0adc14ffd7bad09af2e2fc3523bb",
                 "shasum": ""
             },
             "require": {
@@ -6755,7 +6755,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2023-12-08T14:34:28+00:00"
+            "time": "2024-01-05T15:50:47+00:00"
         },
         {
             "name": "phpstan/phpstan-phpunit",