diff --git a/phpstan.dist.neon b/phpstan.dist.neon
index 9f5b4f5..ee399ab 100644
--- a/phpstan.dist.neon
+++ b/phpstan.dist.neon
@@ -10,6 +10,7 @@ includes:
 
 parameters:
     level: 9
+    phpVersion: 80100 # PHP 8.1
     treatPhpDocTypesAsCertain: false
     ignoreErrors:
         - identifier: ternary.shortNotAllowed
diff --git a/src/Console/CsvImportCommand.php b/src/Console/CsvImportCommand.php
index 2d6aecf..da41b52 100644
--- a/src/Console/CsvImportCommand.php
+++ b/src/Console/CsvImportCommand.php
@@ -211,6 +211,7 @@ final class CsvImportCommand extends Console
             'dateColumn' => $input->getOption('dateColumn'),
             'setColumn' => $input->getOption('setColumn')
         ];
+        $filename = stream_get_meta_data($file)['uri'] ?? '';
 
         $headers = fgetcsv($file, null, ",", "\"", "\\");
         if (!is_array($headers) || is_null($headers[0])) {
@@ -218,7 +219,7 @@ final class CsvImportCommand extends Console
                 '',
                 sprintf(
                     ' [ERROR] File "%s" does not contain valid CSV. ',
-                    stream_get_meta_data($file)['uri'] ?? 'unknown'
+                    $filename ?: 'unknown'
                 ),
                 ''
             ]);
@@ -239,7 +240,7 @@ final class CsvImportCommand extends Console
                 '',
                 sprintf(
                     ' [ERROR] File "%s" does not contain mandatory columns. ',
-                    stream_get_meta_data($file)['uri'] ?? 'unknown'
+                    $filename ?: 'unknown'
                 ),
                 ''
             ]);
diff --git a/src/Console/UpdateFormatsCommand.php b/src/Console/UpdateFormatsCommand.php
index 1dc0952..3d8653d 100644
--- a/src/Console/UpdateFormatsCommand.php
+++ b/src/Console/UpdateFormatsCommand.php
@@ -60,10 +60,11 @@ final class UpdateFormatsCommand extends Console
         $failure = false;
         foreach ($formats as $prefix => $format) {
             if (
+                /** PHPStan and Psalm don't recognize this as assertion. */
                 $inDatabase->containsKey($prefix)
-                /** @phpstan-ignore-next-line - see line 62 */
+                /** @phpstan-ignore-next-line - see above */
                 and $format['namespace'] === $inDatabase[$prefix]->getNamespace()
-                /** @phpstan-ignore-next-line - see line 62 */
+                /** @phpstan-ignore-next-line - see above */
                 and $format['schema'] === $inDatabase[$prefix]->getSchema()
             ) {
                 continue;