diff --git a/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/Arr.php b/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/Arr.php
index daf731ef..f8c84885 100644
--- a/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/Arr.php
+++ b/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/Arr.php
@@ -4,6 +4,7 @@
 
 namespace MartinGeorgiev\Doctrine\ORM\Query\AST\Functions;
 
+use Doctrine\ORM\Query\AST\Node;
 use MartinGeorgiev\Doctrine\ORM\Query\AST\Functions\Exception\InvalidArgumentForVariadicFunctionException;
 
 /**
@@ -23,7 +24,7 @@ protected function customizeFunction(): void
         $this->setFunctionPrototype('ARRAY[%s]');
     }
 
-    protected function validateArguments(array $arguments): void
+    protected function validateArguments(Node ...$arguments): void
     {
         $argumentCount = \count($arguments);
         if ($argumentCount === 0) {
diff --git a/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/BaseVariadicFunction.php b/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/BaseVariadicFunction.php
index 8a08b319..679c413a 100644
--- a/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/BaseVariadicFunction.php
+++ b/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/BaseVariadicFunction.php
@@ -51,7 +51,7 @@ protected function feedParserWithNodes(Parser $parser): void
             $lookaheadType = DoctrineLexer::getLookaheadType($lexer);
         }
 
-        $this->validateArguments($this->nodes);
+        $this->validateArguments(...$this->nodes); // @phpstan-ignore-line
     }
 
     public function getSql(SqlWalker $sqlWalker): string
@@ -67,9 +67,7 @@ public function getSql(SqlWalker $sqlWalker): string
     /**
      * Validates the arguments passed to the function.
      *
-     * @param mixed[] $arguments The array of arguments to validate
-     *
      * @throws InvalidArgumentForVariadicFunctionException
      */
-    abstract protected function validateArguments(array $arguments): void;
+    abstract protected function validateArguments(Node ...$arguments): void;
 }
diff --git a/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/Greatest.php b/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/Greatest.php
index 18b4f270..89a07cf8 100644
--- a/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/Greatest.php
+++ b/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/Greatest.php
@@ -4,6 +4,7 @@
 
 namespace MartinGeorgiev\Doctrine\ORM\Query\AST\Functions;
 
+use Doctrine\ORM\Query\AST\Node;
 use MartinGeorgiev\Doctrine\ORM\Query\AST\Functions\Exception\InvalidArgumentForVariadicFunctionException;
 
 /**
@@ -21,7 +22,7 @@ protected function customizeFunction(): void
         $this->setFunctionPrototype('greatest(%s)');
     }
 
-    protected function validateArguments(array $arguments): void
+    protected function validateArguments(Node ...$arguments): void
     {
         $argumentCount = \count($arguments);
         if ($argumentCount < 2) {
diff --git a/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/JsonBuildObject.php b/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/JsonBuildObject.php
index 47fbca84..8daa091b 100644
--- a/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/JsonBuildObject.php
+++ b/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/JsonBuildObject.php
@@ -4,6 +4,7 @@
 
 namespace MartinGeorgiev\Doctrine\ORM\Query\AST\Functions;
 
+use Doctrine\ORM\Query\AST\Node;
 use MartinGeorgiev\Doctrine\ORM\Query\AST\Functions\Exception\InvalidArgumentForVariadicFunctionException;
 
 /**
@@ -21,7 +22,7 @@ protected function customizeFunction(): void
         $this->setFunctionPrototype('json_build_object(%s)');
     }
 
-    protected function validateArguments(array $arguments): void
+    protected function validateArguments(Node ...$arguments): void
     {
         $argumentCount = \count($arguments);
         if ($argumentCount === 0 || $argumentCount % 2 !== 0) {
diff --git a/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/JsonbBuildObject.php b/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/JsonbBuildObject.php
index f55fb828..bebba4d8 100644
--- a/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/JsonbBuildObject.php
+++ b/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/JsonbBuildObject.php
@@ -4,6 +4,7 @@
 
 namespace MartinGeorgiev\Doctrine\ORM\Query\AST\Functions;
 
+use Doctrine\ORM\Query\AST\Node;
 use MartinGeorgiev\Doctrine\ORM\Query\AST\Functions\Exception\InvalidArgumentForVariadicFunctionException;
 
 /**
@@ -21,7 +22,7 @@ protected function customizeFunction(): void
         $this->setFunctionPrototype('jsonb_build_object(%s)');
     }
 
-    protected function validateArguments(array $arguments): void
+    protected function validateArguments(Node ...$arguments): void
     {
         $argumentCount = \count($arguments);
         if ($argumentCount === 0 || $argumentCount % 2 !== 0) {
diff --git a/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/Least.php b/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/Least.php
index a56efb96..b52e1f79 100644
--- a/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/Least.php
+++ b/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/Least.php
@@ -4,6 +4,7 @@
 
 namespace MartinGeorgiev\Doctrine\ORM\Query\AST\Functions;
 
+use Doctrine\ORM\Query\AST\Node;
 use MartinGeorgiev\Doctrine\ORM\Query\AST\Functions\Exception\InvalidArgumentForVariadicFunctionException;
 
 /**
@@ -21,7 +22,7 @@ protected function customizeFunction(): void
         $this->setFunctionPrototype('least(%s)');
     }
 
-    protected function validateArguments(array $arguments): void
+    protected function validateArguments(Node ...$arguments): void
     {
         $argumentCount = \count($arguments);
         if ($argumentCount < 2) {
diff --git a/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/Row.php b/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/Row.php
index 4ffbeca9..2c959617 100644
--- a/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/Row.php
+++ b/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/Row.php
@@ -4,6 +4,7 @@
 
 namespace MartinGeorgiev\Doctrine\ORM\Query\AST\Functions;
 
+use Doctrine\ORM\Query\AST\Node;
 use MartinGeorgiev\Doctrine\ORM\Query\AST\Functions\Exception\InvalidArgumentForVariadicFunctionException;
 
 /**
@@ -20,7 +21,7 @@ protected function customizeFunction(): void
         $this->setFunctionPrototype('ROW(%s)');
     }
 
-    protected function validateArguments(array $arguments): void
+    protected function validateArguments(Node ...$arguments): void
     {
         $argumentCount = \count($arguments);
         if ($argumentCount === 0) {
diff --git a/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/ToTsquery.php b/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/ToTsquery.php
index 25f50ea9..653f1b54 100644
--- a/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/ToTsquery.php
+++ b/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/ToTsquery.php
@@ -4,6 +4,7 @@
 
 namespace MartinGeorgiev\Doctrine\ORM\Query\AST\Functions;
 
+use Doctrine\ORM\Query\AST\Node;
 use MartinGeorgiev\Doctrine\ORM\Query\AST\Functions\Exception\InvalidArgumentForVariadicFunctionException;
 
 /**
@@ -21,7 +22,7 @@ protected function customizeFunction(): void
         $this->setFunctionPrototype('to_tsquery(%s)');
     }
 
-    protected function validateArguments(array $arguments): void
+    protected function validateArguments(Node ...$arguments): void
     {
         $argumentCount = \count($arguments);
         if ($argumentCount < 1 || $argumentCount > 2) {
diff --git a/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/ToTsvector.php b/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/ToTsvector.php
index 1f090a25..e5b1ef71 100644
--- a/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/ToTsvector.php
+++ b/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/ToTsvector.php
@@ -4,6 +4,7 @@
 
 namespace MartinGeorgiev\Doctrine\ORM\Query\AST\Functions;
 
+use Doctrine\ORM\Query\AST\Node;
 use MartinGeorgiev\Doctrine\ORM\Query\AST\Functions\Exception\InvalidArgumentForVariadicFunctionException;
 
 /**
@@ -23,7 +24,7 @@ protected function customizeFunction(): void
         $this->setFunctionPrototype('to_tsvector(%s)');
     }
 
-    protected function validateArguments(array $arguments): void
+    protected function validateArguments(Node ...$arguments): void
     {
         $argumentCount = \count($arguments);
         if ($argumentCount < 1 || $argumentCount > 2) {
diff --git a/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/Unaccent.php b/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/Unaccent.php
index 01d15c8c..8b4aea19 100644
--- a/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/Unaccent.php
+++ b/src/MartinGeorgiev/Doctrine/ORM/Query/AST/Functions/Unaccent.php
@@ -4,6 +4,7 @@
 
 namespace MartinGeorgiev\Doctrine\ORM\Query\AST\Functions;
 
+use Doctrine\ORM\Query\AST\Node;
 use MartinGeorgiev\Doctrine\ORM\Query\AST\Functions\Exception\InvalidArgumentForVariadicFunctionException;
 
 /**
@@ -22,7 +23,7 @@ protected function customizeFunction(): void
         $this->setFunctionPrototype('unaccent(%s)');
     }
 
-    protected function validateArguments(array $arguments): void
+    protected function validateArguments(Node ...$arguments): void
     {
         $argumentCount = \count($arguments);
         if ($argumentCount < 1 || $argumentCount > 2) {