diff --git a/src/TicketSwapErrorFormatter.php b/src/TicketSwapErrorFormatter.php
index f488bfe..3884b35 100644
--- a/src/TicketSwapErrorFormatter.php
+++ b/src/TicketSwapErrorFormatter.php
@@ -245,7 +245,7 @@ public static function highlight(string $message, ?string $tip, ?string $identif
 
         // Types
         $message = (string) preg_replace(
-            '/(?<=[\s\|\(><])(null|true|false|int|float|bool|([-\w]+-)?string|array|object|mixed|resource|iterable|void|callable)(?=[:]{2}|[\.\s\|><,\(\)\{\}]+)/',
+            '/(?<=[\s\|\(><])(null|true|false|int|float|bool|([-\w]+-)?string|Stringable|array|object|mixed|resource|iterable|void|callable)(?=[:]{2}|[\.\s\|><,\(\)\{\}]+)/',
             '<fg=magenta>$1</>',
             $message,
         );
diff --git a/tests/TicketSwapErrorFormatterTest.php b/tests/TicketSwapErrorFormatterTest.php
index 3f374bb..cb2984c 100644
--- a/tests/TicketSwapErrorFormatterTest.php
+++ b/tests/TicketSwapErrorFormatterTest.php
@@ -203,6 +203,13 @@ public static function provideHighlight() : iterable
             'argument.type',
             true
         ];
+        yield [
+            'Parameter #1 <fg=green>$currentWorkingDirectory</> of method <fg=yellow>Application\AnalyzeCommand</>: <fg=blue>getFinder()</> expects <fg=magenta>string</>, <fg=magenta>Stringable</>|<fg=magenta>false</> given.',
+            'Parameter #1 $currentWorkingDirectory of method Application\AnalyzeCommand: getFinder() expects string, Stringable|false given.',
+            null,
+            null,
+            true
+        ];
     }
 
     /**