diff --git a/phpstan.neon b/phpstan.neon
index 08566d0..e9a9e7e 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -1,5 +1,5 @@
 parameters:
-    level: 9
+    level: 10
     paths:
         - src
         - tests
diff --git a/src/Factory.php b/src/Factory.php
index 1b50128..610d41f 100644
--- a/src/Factory.php
+++ b/src/Factory.php
@@ -37,6 +37,8 @@ final class Factory
      * @param list<non-empty-string>|string           $suffixes
      * @param list<non-empty-string>|string           $prefixes
      * @param list<non-empty-string>                  $exclude
+     *
+     * @phpstan-ignore missingType.generics
      */
     public function getFileIterator(array|string $paths, array|string $suffixes = '', array|string $prefixes = '', array $exclude = []): AppendIterator
     {
diff --git a/src/Iterator.php b/src/Iterator.php
index 405f25d..a1c9408 100644
--- a/src/Iterator.php
+++ b/src/Iterator.php
@@ -9,7 +9,6 @@
  */
 namespace SebastianBergmann\FileIterator;
 
-use function assert;
 use function preg_match;
 use function realpath;
 use function str_ends_with;
@@ -56,8 +55,6 @@ public function accept(): bool
     {
         $current = $this->getInnerIterator()->current();
 
-        assert($current instanceof SplFileInfo);
-
         $filename = $current->getFilename();
         $realPath = $current->getRealPath();