diff --git a/phpstan-baseline.neon b/phpstan-baseline.neon
index 0d05fb20..9a6948e8 100644
--- a/phpstan-baseline.neon
+++ b/phpstan-baseline.neon
@@ -1,10 +1,5 @@
 parameters:
 	ignoreErrors:
-		-
-			message: "#^Method Ibexa\\\\Bundle\\\\FieldTypeRichText\\\\DependencyInjection\\\\Compiler\\\\RichTextHtml5ConverterPass\\:\\:process\\(\\) has no return type specified\\.$#"
-			count: 1
-			path: src/bundle/DependencyInjection/Compiler/RichTextHtml5ConverterPass.php
-
 		-
 			message: "#^Method Ibexa\\\\Bundle\\\\FieldTypeRichText\\\\DependencyInjection\\\\Compiler\\\\RichTextHtml5ConverterPass\\:\\:setConverterDefinitions\\(\\) has no return type specified\\.$#"
 			count: 1
@@ -110,11 +105,6 @@ parameters:
 			count: 1
 			path: src/bundle/DependencyInjection/IbexaFieldTypeRichTextExtension.php
 
-		-
-			message: "#^Method Ibexa\\\\Bundle\\\\FieldTypeRichText\\\\DependencyInjection\\\\IbexaFieldTypeRichTextExtension\\:\\:prepend\\(\\) has no return type specified\\.$#"
-			count: 1
-			path: src/bundle/DependencyInjection/IbexaFieldTypeRichTextExtension.php
-
 		-
 			message: "#^Method Ibexa\\\\Bundle\\\\FieldTypeRichText\\\\DependencyInjection\\\\IbexaFieldTypeRichTextExtension\\:\\:registerRichTextConfiguration\\(\\) has parameter \\$config with no value type specified in iterable type array\\.$#"
 			count: 1
@@ -165,11 +155,6 @@ parameters:
 			count: 2
 			path: src/bundle/DependencyInjection/IbexaFieldTypeRichTextExtension.php
 
-		-
-			message: "#^Method Ibexa\\\\Bundle\\\\FieldTypeRichText\\\\IbexaFieldTypeRichTextBundle\\:\\:build\\(\\) has no return type specified\\.$#"
-			count: 1
-			path: src/bundle/IbexaFieldTypeRichTextBundle.php
-
 		-
 			message: "#^Method Ibexa\\\\Bundle\\\\FieldTypeRichText\\\\IbexaFieldTypeRichTextBundle\\:\\:getCoreExtension\\(\\) should return Ibexa\\\\Bundle\\\\Core\\\\DependencyInjection\\\\IbexaCoreExtension but returns Symfony\\\\Component\\\\DependencyInjection\\\\Extension\\\\ExtensionInterface\\.$#"
 			count: 1
diff --git a/src/lib/Validator/Constraints/RichTextValidator.php b/src/lib/Validator/Constraints/RichTextValidator.php
index a63919f1..5422c1c7 100644
--- a/src/lib/Validator/Constraints/RichTextValidator.php
+++ b/src/lib/Validator/Constraints/RichTextValidator.php
@@ -32,7 +32,7 @@ public function __construct(InputHandlerInterface $inputHandler)
     /**
      * {@inheritdoc}
      */
-    public function validate($value, Constraint $constraint): void
+    public function validate(mixed $value, Constraint $constraint): void
     {
         if (is_string($value)) {
             try {