diff --git a/application/Espo/Core/Acl/DefaultAssignmentChecker.php b/application/Espo/Core/Acl/DefaultAssignmentChecker.php
index 509e9423d6..280bcd668d 100644
--- a/application/Espo/Core/Acl/DefaultAssignmentChecker.php
+++ b/application/Espo/Core/Acl/DefaultAssignmentChecker.php
@@ -277,8 +277,7 @@ class DefaultAssignmentChecker implements AssignmentChecker
             if ($entity->isAttributeChanged(self::ATTR_ASSIGNED_USERS_IDS)) {
                 $toProcess = true;
             }
-        }
-        else {
+        } else {
             $toProcess = true;
         }
 
@@ -304,6 +303,7 @@ class DefaultAssignmentChecker implements AssignmentChecker
             return $this->isPermittedAssignedUsersLevelTeam($user, $entity);
         }
 
+        /** @phpstan-ignore-next-line */
         return true;
     }
 
diff --git a/application/Espo/Core/FileStorage/Manager.php b/application/Espo/Core/FileStorage/Manager.php
index 1f1b45ad1b..27d9eecd43 100644
--- a/application/Espo/Core/FileStorage/Manager.php
+++ b/application/Espo/Core/FileStorage/Manager.php
@@ -160,7 +160,11 @@ class Manager
 
         fwrite($resource, $contents);
 
-        $path = stream_get_meta_data($resource)['uri'];
+        $path = stream_get_meta_data($resource)['uri'] ?? null;
+
+        if (!$path) {
+            throw new RuntimeException("No uri.");
+        }
 
         // To prevent deleting.
         $this->resourceMap[$path] = $resource;
diff --git a/application/Espo/Core/Utils/Metadata.php b/application/Espo/Core/Utils/Metadata.php
index 03135d692f..af4b8703ed 100644
--- a/application/Espo/Core/Utils/Metadata.php
+++ b/application/Espo/Core/Utils/Metadata.php
@@ -294,7 +294,7 @@ class Metadata
                 $unsetList = $unsets;
 
                 foreach ($unsetList as $unsetItem) {
-                    if (preg_match('/fields\.([^.]+)/', $unsetItem, $matches) && isset($matches[1])) {
+                    if (preg_match('/fields\.([^.]+)/', $unsetItem, $matches)) {
                         $fieldName = $matches[1];
                         $fieldPath = [$key1, $key2, 'fields', $fieldName];
 
diff --git a/application/Espo/Core/Utils/System.php b/application/Espo/Core/Utils/System.php
index 85b929a585..7fc195c904 100644
--- a/application/Espo/Core/Utils/System.php
+++ b/application/Espo/Core/Utils/System.php
@@ -49,7 +49,7 @@ class System
         }
 
         return strtolower(
-            trim($match[1])
+            trim($match[1]) /** @phpstan-ignore-line */
         );
     }
 
diff --git a/composer.json b/composer.json
index a1378bd66c..04ec8e193c 100644
--- a/composer.json
+++ b/composer.json
@@ -56,7 +56,7 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^9.5",
-        "phpstan/phpstan": "^1.10"
+        "phpstan/phpstan": "^1.12"
     },
     "suggest": {
         "ext-pdo_mysql": "*",
diff --git a/composer.lock b/composer.lock
index 5e5bac5688..167fb6294b 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": "ec45187cd1774562b435c8a589aeeee6",
+    "content-hash": "ca1dc00c70f187b1a40064861bd7a8e7",
     "packages": [
         {
             "name": "async-aws/core",
@@ -7404,16 +7404,16 @@
         },
         {
             "name": "phpstan/phpstan",
-            "version": "1.10.57",
+            "version": "1.12.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpstan/phpstan.git",
-                "reference": "1627b1d03446904aaa77593f370c5201d2ecc34e"
+                "reference": "384af967d35b2162f69526c7276acadce534d0e1"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/1627b1d03446904aaa77593f370c5201d2ecc34e",
-                "reference": "1627b1d03446904aaa77593f370c5201d2ecc34e",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/384af967d35b2162f69526c7276acadce534d0e1",
+                "reference": "384af967d35b2162f69526c7276acadce534d0e1",
                 "shasum": ""
             },
             "require": {
@@ -7456,13 +7456,9 @@
                 {
                     "url": "https://github.com/phpstan",
                     "type": "github"
-                },
-                {
-                    "url": "https://tidelift.com/funding/github/packagist/phpstan/phpstan",
-                    "type": "tidelift"
                 }
             ],
-            "time": "2024-01-24T11:51:34+00:00"
+            "time": "2024-08-27T09:18:05+00:00"
         },
         {
             "name": "phpunit/php-code-coverage",