diff --git a/composer.json b/composer.json
index 632c97b2ca9..bb7399ad78b 100644
--- a/composer.json
+++ b/composer.json
@@ -56,7 +56,7 @@
         "rector/type-perfect": "^2.1",
         "shipmonk/composer-dependency-analyser": "^1.8",
         "symplify/phpstan-extensions": "^12.0.2",
-        "symplify/phpstan-rules": "^14.8",
+        "symplify/phpstan-rules": "^14.8.4",
         "symplify/vendor-patches": "^11.5",
         "tomasvotruba/class-leak": "^2.0",
         "tracy/tracy": "^2.11"
diff --git a/rules/Php85/Rector/FuncCall/RemoveFinfoBufferContextArgRector.php b/rules/Php85/Rector/FuncCall/RemoveFinfoBufferContextArgRector.php
index 70604712e08..17ce17e29e2 100644
--- a/rules/Php85/Rector/FuncCall/RemoveFinfoBufferContextArgRector.php
+++ b/rules/Php85/Rector/FuncCall/RemoveFinfoBufferContextArgRector.php
@@ -5,8 +5,6 @@
 namespace Rector\Php85\Rector\FuncCall;
 
 use PhpParser\Node;
-use PhpParser\Node\Arg;
-use PhpParser\Node\Expr\CallLike;
 use PhpParser\Node\Expr\FuncCall;
 use PhpParser\Node\Expr\MethodCall;
 use PhpParser\Node\Identifier;
@@ -58,6 +56,10 @@ public function getNodeTypes(): array
      */
     public function refactor(Node $node): ?Node
     {
+        if ($node->isFirstClassCallable()) {
+            return null;
+        }
+
         if ($node instanceof FuncCall && ! $this->isName($node->name, 'finfo_buffer')) {
             return null;
         }
@@ -82,10 +84,7 @@ public function provideMinPhpVersion(): int
         return PhpVersionFeature::DEPRECATE_FINFO_BUFFER_CONTEXT;
     }
 
-    /**
-     * @param FuncCall|MethodCall $callLike
-     */
-    private function removeContextArg(CallLike $callLike): bool
+    private function removeContextArg(FuncCall|MethodCall $callLike): bool
     {
         // In `finfo::buffer` method calls, the first parameter, compared to `finfo_buffer`, does not exist.
         $methodArgCorrection = 0;
@@ -97,15 +96,7 @@ private function removeContextArg(CallLike $callLike): bool
             return false;
         }
 
-        // Cannot handle variadic args
-        foreach ($callLike->args as $position => $arg) {
-            if (! $arg instanceof Arg) {
-                return false;
-            }
-        }
-
-        /** @var array<Arg> $args */
-        $args = $callLike->args;
+        $args = $callLike->getArgs();
 
         // Argument 3 ($flags) and argument 4 ($context) are optional, thus named parameters must be considered
         if (! $this->argsAnalyzer->hasNamedArg($args)) {
@@ -119,7 +110,7 @@ private function removeContextArg(CallLike $callLike): bool
         }
 
         foreach ($args as $position => $arg) {
-            if ($arg->name instanceof Identifier && $arg->name->name === 'context') {
+            if ($arg->name instanceof Identifier && $this->isName($arg->name, 'context')) {
                 unset($callLike->args[$position]);
 
                 return true;