diff --git a/composer.json b/composer.json
index e508b7121..da4ba5434 100644
--- a/composer.json
+++ b/composer.json
@@ -30,7 +30,7 @@
         "humbug/php-scoper": "^0.18.6",
         "justinrainbow/json-schema": "^5.2.12",
         "nikic/iter": "^2.2",
-        "phpdocumentor/reflection-docblock": "^5.3",
+        "phpdocumentor/reflection-docblock": "^5.4",
         "phpdocumentor/type-resolver": "^1.7",
         "psr/log": "^3.0",
         "sebastian/diff": "^5.0",
diff --git a/composer.lock b/composer.lock
index bdd43c8dd..4db5c602e 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "ef3c7bc84d266e28f33e96b7e314701d",
+    "content-hash": "0d7aa61ebf8b2c3c086e8acf33ea654f",
     "packages": [
         {
             "name": "amphp/amp",
@@ -1922,28 +1922,35 @@
         },
         {
             "name": "phpdocumentor/reflection-docblock",
-            "version": "5.3.0",
+            "version": "5.4.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpDocumentor/ReflectionDocBlock.git",
-                "reference": "622548b623e81ca6d78b721c5e029f4ce664f170"
+                "reference": "298d2febfe79d03fe714eb871d5538da55205b1a"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpDocumentor/ReflectionDocBlock/zipball/622548b623e81ca6d78b721c5e029f4ce664f170",
-                "reference": "622548b623e81ca6d78b721c5e029f4ce664f170",
+                "url": "https://api.github.com/repos/phpDocumentor/ReflectionDocBlock/zipball/298d2febfe79d03fe714eb871d5538da55205b1a",
+                "reference": "298d2febfe79d03fe714eb871d5538da55205b1a",
                 "shasum": ""
             },
             "require": {
+                "doctrine/deprecations": "^1.1",
                 "ext-filter": "*",
-                "php": "^7.2 || ^8.0",
+                "php": "^7.4 || ^8.0",
                 "phpdocumentor/reflection-common": "^2.2",
-                "phpdocumentor/type-resolver": "^1.3",
+                "phpdocumentor/type-resolver": "^1.7",
+                "phpstan/phpdoc-parser": "^1.7",
                 "webmozart/assert": "^1.9.1"
             },
             "require-dev": {
-                "mockery/mockery": "~1.3.2",
-                "psalm/phar": "^4.8"
+                "mockery/mockery": "~1.3.5",
+                "phpstan/extension-installer": "^1.1",
+                "phpstan/phpstan": "^1.8",
+                "phpstan/phpstan-mockery": "^1.1",
+                "phpstan/phpstan-webmozart-assert": "^1.2",
+                "phpunit/phpunit": "^9.5",
+                "vimeo/psalm": "^5.13"
             },
             "type": "library",
             "extra": {
@@ -1967,15 +1974,15 @@
                 },
                 {
                     "name": "Jaap van Otterdijk",
-                    "email": "account@ijaap.nl"
+                    "email": "opensource@ijaap.nl"
                 }
             ],
             "description": "With this component, a library can provide support for annotations via DocBlocks or otherwise retrieve information that is embedded in a DocBlock.",
             "support": {
                 "issues": "https://github.com/phpDocumentor/ReflectionDocBlock/issues",
-                "source": "https://github.com/phpDocumentor/ReflectionDocBlock/tree/5.3.0"
+                "source": "https://github.com/phpDocumentor/ReflectionDocBlock/tree/5.4.0"
             },
-            "time": "2021-10-19T17:43:47+00:00"
+            "time": "2024-04-09T21:13:58+00:00"
         },
         {
             "name": "phpdocumentor/type-resolver",
diff --git a/src/Annotation/CompactedFormatter.php b/src/Annotation/CompactedFormatter.php
index 3aeef0cb4..c991b608e 100644
--- a/src/Annotation/CompactedFormatter.php
+++ b/src/Annotation/CompactedFormatter.php
@@ -17,18 +17,38 @@
 use phpDocumentor\Reflection\DocBlock\Tag;
 use phpDocumentor\Reflection\DocBlock\Tags\Formatter;
 use phpDocumentor\Reflection\DocBlock\Tags\Generic;
+use phpDocumentor\Reflection\DocBlock\Tags\InvalidTag;
 use function array_map;
 use function explode;
 use function implode;
+use function sprintf;
 
 final class CompactedFormatter implements Formatter
 {
     public function format(Tag $tag): string
     {
-        if (!$tag instanceof Generic) {
-            return trim('@'.$tag->getName());
+        if ($tag instanceof InvalidTag) {
+            return self::formatInvalidTag($tag);
+        }
+
+        if ($tag instanceof Generic) {
+            return self::formatGenericTag($tag);
         }
 
+        return trim('@'.$tag->getName());
+    }
+
+    private static function formatInvalidTag(InvalidTag $tag): string
+    {
+        return sprintf(
+            '@%s %s',
+            $tag->getName(),
+            $tag,
+        );
+    }
+
+    private static function formatGenericTag(Generic $tag): string
+    {
         $description = (string) $tag;
 
         if (!str_starts_with($description, '(')) {
diff --git a/tests/Compactor/PhpTest.php b/tests/Compactor/PhpTest.php
index f6bd1e0ec..f483d722d 100644
--- a/tests/Compactor/PhpTest.php
+++ b/tests/Compactor/PhpTest.php
@@ -423,8 +423,8 @@ function foo($x) {
                 <?php
 
                 /**
-                 * @param (string|stdClass $x
-                 */
+                @param (string|stdClass $x
+                */
                 function foo($x) {
                 }
                 PHP,