diff --git a/composer.json b/composer.json
index 11c2ef3d64..014c52d76a 100644
--- a/composer.json
+++ b/composer.json
@@ -39,13 +39,12 @@
     },
     "require-dev": {
         "ext-bcmath": "*",
-        "doctrine/coding-standard": "^11.0",
+        "doctrine/coding-standard": "^12.0",
         "jmikola/geojson": "^1.0",
         "phpbench/phpbench": "^1.0.0@dev",
         "phpstan/phpstan": "^1.10.11",
         "phpstan/phpstan-phpunit": "^1.0",
         "phpunit/phpunit": "^9.5.5 || ^10.0.15",
-        "squizlabs/php_codesniffer": "^3.5",
         "symfony/cache": "^4.4 || ^5.0 || ^6.0",
         "vimeo/psalm": "^5.9.0"
     },
diff --git a/lib/Doctrine/ODM/MongoDB/Mapping/Driver/XmlDriver.php b/lib/Doctrine/ODM/MongoDB/Mapping/Driver/XmlDriver.php
index 3ca151f412..600554b393 100644
--- a/lib/Doctrine/ODM/MongoDB/Mapping/Driver/XmlDriver.php
+++ b/lib/Doctrine/ODM/MongoDB/Mapping/Driver/XmlDriver.php
@@ -184,8 +184,8 @@ public function loadMetadataForClass($className, \Doctrine\Persistence\Mapping\C
             $metadata->setDefaultDiscriminatorValue((string) $xmlRoot->{'default-discriminator-value'}['value']);
         }
 
-        if (isset($xmlRoot->{'indexes'})) {
-            foreach ($xmlRoot->{'indexes'}->{'index'} as $index) {
+        if (isset($xmlRoot->indexes)) {
+            foreach ($xmlRoot->indexes->index as $index) {
                 $this->addIndex($metadata, $index);
             }
         }
@@ -474,15 +474,15 @@ private function addReferenceMapping(ClassMetadata $class, ?SimpleXMLElement $re
             $mapping['defaultDiscriminatorValue'] = (string) $reference->{'default-discriminator-value'}['value'];
         }
 
-        if (isset($reference->{'sort'})) {
-            foreach ($reference->{'sort'}->{'sort'} as $sort) {
+        if (isset($reference->sort)) {
+            foreach ($reference->sort->sort as $sort) {
                 $attr                                     = $sort->attributes();
                 $mapping['sort'][(string) $attr['field']] = (string) ($attr['order'] ?? 'asc');
             }
         }
 
-        if (isset($reference->{'criteria'})) {
-            foreach ($reference->{'criteria'}->{'criteria'} as $criteria) {
+        if (isset($reference->criteria)) {
+            foreach ($reference->criteria->criteria as $criteria) {
                 $attr                                         = $criteria->attributes();
                 $mapping['criteria'][(string) $attr['field']] = (string) $attr['value'];
             }
@@ -496,8 +496,8 @@ private function addReferenceMapping(ClassMetadata $class, ?SimpleXMLElement $re
             $mapping['alsoLoadFields'] = explode(',', (string) $attributes['also-load']);
         }
 
-        if (isset($reference->{'prime'})) {
-            foreach ($reference->{'prime'}->{'field'} as $field) {
+        if (isset($reference->prime)) {
+            foreach ($reference->prime->field as $field) {
                 $attr               = $field->attributes();
                 $mapping['prime'][] = (string) $attr['name'];
             }
@@ -513,7 +513,7 @@ private function addIndex(ClassMetadata $class, SimpleXMLElement $xmlIndex): voi
 
         $keys = [];
 
-        foreach ($xmlIndex->{'key'} as $key) {
+        foreach ($xmlIndex->key as $key) {
             $keys[(string) $key['name']] = (string) ($key['order'] ?? 'asc');
         }
 
@@ -535,8 +535,8 @@ private function addIndex(ClassMetadata $class, SimpleXMLElement $xmlIndex): voi
             $options['unique'] = ((string) $attributes['unique'] === 'true');
         }
 
-        if (isset($xmlIndex->{'option'})) {
-            foreach ($xmlIndex->{'option'} as $option) {
+        if (isset($xmlIndex->option)) {
+            foreach ($xmlIndex->option as $option) {
                 $options[(string) $option['name']] = $this->convertXMLElementValue((string) $option['value']);
             }
         }
@@ -635,7 +635,7 @@ private function setShardKey(ClassMetadata $class, SimpleXMLElement $xmlShardkey
 
         $keys    = [];
         $options = [];
-        foreach ($xmlShardkey->{'key'} as $key) {
+        foreach ($xmlShardkey->key as $key) {
             $keys[(string) $key['name']] = (string) ($key['order'] ?? 'asc');
         }
 
@@ -647,8 +647,8 @@ private function setShardKey(ClassMetadata $class, SimpleXMLElement $xmlShardkey
             $options['numInitialChunks'] = (int) $attributes['numInitialChunks'];
         }
 
-        if (isset($xmlShardkey->{'option'})) {
-            foreach ($xmlShardkey->{'option'} as $option) {
+        if (isset($xmlShardkey->option)) {
+            foreach ($xmlShardkey->option as $option) {
                 $options[(string) $option['name']] = $this->convertXMLElementValue((string) $option['value']);
             }
         }
diff --git a/psalm-baseline.xml b/psalm-baseline.xml
index 941b851bc2..b2cc0a72c4 100644
--- a/psalm-baseline.xml
+++ b/psalm-baseline.xml
@@ -85,13 +85,13 @@
     <InvalidPropertyFetch>
       <code><![CDATA[$xmlRoot->field]]></code>
       <code><![CDATA[$xmlRoot->id]]></code>
+      <code><![CDATA[$xmlRoot->indexes]]></code>
       <code><![CDATA[$xmlRoot->{'also-load-methods'}]]></code>
       <code><![CDATA[$xmlRoot->{'default-discriminator-value'}]]></code>
       <code><![CDATA[$xmlRoot->{'discriminator-field'}]]></code>
       <code><![CDATA[$xmlRoot->{'discriminator-map'}]]></code>
       <code><![CDATA[$xmlRoot->{'embed-many'}]]></code>
       <code><![CDATA[$xmlRoot->{'embed-one'}]]></code>
-      <code><![CDATA[$xmlRoot->{'indexes'}]]></code>
       <code><![CDATA[$xmlRoot->{'lifecycle-callbacks'}]]></code>
       <code><![CDATA[$xmlRoot->{'read-preference'}]]></code>
       <code><![CDATA[$xmlRoot->{'reference-many'}]]></code>
@@ -102,13 +102,13 @@
     <NoInterfaceProperties>
       <code><![CDATA[$xmlRoot->field]]></code>
       <code><![CDATA[$xmlRoot->id]]></code>
+      <code><![CDATA[$xmlRoot->indexes]]></code>
       <code><![CDATA[$xmlRoot->{'also-load-methods'}]]></code>
       <code><![CDATA[$xmlRoot->{'default-discriminator-value'}]]></code>
       <code><![CDATA[$xmlRoot->{'discriminator-field'}]]></code>
       <code><![CDATA[$xmlRoot->{'discriminator-map'}]]></code>
       <code><![CDATA[$xmlRoot->{'embed-many'}]]></code>
       <code><![CDATA[$xmlRoot->{'embed-one'}]]></code>
-      <code><![CDATA[$xmlRoot->{'indexes'}]]></code>
       <code><![CDATA[$xmlRoot->{'lifecycle-callbacks'}]]></code>
       <code><![CDATA[$xmlRoot->{'read-preference'}]]></code>
       <code><![CDATA[$xmlRoot->{'reference-many'}]]></code>
@@ -130,30 +130,30 @@
       <code><![CDATA[isset($field->{'generator-option'})]]></code>
       <code><![CDATA[isset($partialFilterExpressionMapping->and)]]></code>
       <code><![CDATA[isset($partialFilterExpressionMapping->field)]]></code>
-      <code><![CDATA[isset($reference->{'criteria'})]]></code>
+      <code><![CDATA[isset($reference->criteria)]]></code>
+      <code><![CDATA[isset($reference->prime)]]></code>
+      <code><![CDATA[isset($reference->sort)]]></code>
       <code><![CDATA[isset($reference->{'default-discriminator-value'})]]></code>
       <code><![CDATA[isset($reference->{'discriminator-field'})]]></code>
       <code><![CDATA[isset($reference->{'discriminator-map'})]]></code>
-      <code><![CDATA[isset($reference->{'prime'})]]></code>
-      <code><![CDATA[isset($reference->{'sort'})]]></code>
-      <code><![CDATA[isset($xmlIndex->{'option'})]]></code>
+      <code><![CDATA[isset($xmlIndex->option)]]></code>
       <code><![CDATA[isset($xmlIndex->{'partial-filter-expression'})]]></code>
       <code><![CDATA[isset($xmlReadPreference->{'tag-set'})]]></code>
       <code><![CDATA[isset($xmlRoot->field)]]></code>
       <code><![CDATA[isset($xmlRoot->id)]]></code>
+      <code><![CDATA[isset($xmlRoot->indexes)]]></code>
       <code><![CDATA[isset($xmlRoot->{'default-discriminator-value'})]]></code>
       <code><![CDATA[isset($xmlRoot->{'discriminator-field'})]]></code>
       <code><![CDATA[isset($xmlRoot->{'discriminator-map'})]]></code>
       <code><![CDATA[isset($xmlRoot->{'embed-many'})]]></code>
       <code><![CDATA[isset($xmlRoot->{'embed-one'})]]></code>
-      <code><![CDATA[isset($xmlRoot->{'indexes'})]]></code>
       <code><![CDATA[isset($xmlRoot->{'lifecycle-callbacks'})]]></code>
       <code><![CDATA[isset($xmlRoot->{'read-preference'})]]></code>
       <code><![CDATA[isset($xmlRoot->{'reference-many'})]]></code>
       <code><![CDATA[isset($xmlRoot->{'reference-one'})]]></code>
       <code><![CDATA[isset($xmlRoot->{'schema-validation'})]]></code>
       <code><![CDATA[isset($xmlRoot->{'shard-key'})]]></code>
-      <code><![CDATA[isset($xmlShardkey->{'option'})]]></code>
+      <code><![CDATA[isset($xmlShardkey->option)]]></code>
     </RedundantCondition>
     <TypeDoesNotContainType>
       <code><![CDATA[$xmlRoot->getName() === 'document']]></code>