diff --git a/psalm-baseline.xml b/psalm-baseline.xml
deleted file mode 100644
index a6b51422..00000000
--- a/psalm-baseline.xml
+++ /dev/null
@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<files psalm-version="3.18.2@19aa905f7c3c7350569999a93c40ae91ae4e1626">
-    <!-- Symfony issue -->
-    <file src="src/DependencyInjection/Configuration.php">
-        <PossiblyUndefinedMethod occurrences="1">
-            <code>children</code>
-        </PossiblyUndefinedMethod>
-    </file>
-</files>
diff --git a/psalm.xml b/psalm.xml
index b61fd1e0..169eebfb 100644
--- a/psalm.xml
+++ b/psalm.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<psalm xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="https://getpsalm.org/schema/config" xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd" autoloader="vendor/bin/.phpunit/phpunit/vendor/autoload.php" errorBaseline="psalm-baseline.xml" errorLevel="2">
+<psalm xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="https://getpsalm.org/schema/config" xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd" autoloader="vendor/bin/.phpunit/phpunit/vendor/autoload.php" errorLevel="2" findUnusedPsalmSuppress="true">
     <projectFiles>
         <directory name="src"/>
         <directory name="tests"/>
diff --git a/src/DependencyInjection/Configuration.php b/src/DependencyInjection/Configuration.php
index 0ff9645b..c7e94464 100644
--- a/src/DependencyInjection/Configuration.php
+++ b/src/DependencyInjection/Configuration.php
@@ -22,6 +22,11 @@
  */
 final class Configuration implements ConfigurationInterface
 {
+    /**
+     * @psalm-suppress PossiblyNullReference, PossiblyUndefinedMethod
+     *
+     * @see https://github.com/psalm/psalm-plugin-symfony/issues/174
+     */
     public function getConfigTreeBuilder(): TreeBuilder
     {
         $treeBuilder = new TreeBuilder('sonata_translation');