diff --git a/composer.json b/composer.json
index c0d6dc1..0ff4d9e 100644
--- a/composer.json
+++ b/composer.json
@@ -21,17 +21,17 @@
         "amphp/parallel": "~1.4",
         "composer/composer": "~1.10",
         "phpdocumentor/type-resolver": "~1.0 || ~1.1",
-        "phpdocumentor/reflection-docblock": "~4.3 || ~5.1",
+        "phpdocumentor/reflection-docblock": "~4.3 || ~5.1 || 5.x-dev",
         "phpdocumentor/reflection-common": "~2.1",
         "phpstan/phpdoc-parser": "0.4.*",
         "voku/simple-cache": "~4.0",
         "nikic/php-parser": "~4.8",
         "ondrejmirtes/better-reflection": "~4.3",
-        "symfony/console": "~3.4 || ~4.1 || ~5.0",
-        "jetbrains/phpstorm-stubs": "dev-master as v2019.3"
+        "symfony/console": "~3.4 || ~4.1 || ~5.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "~6.0 || ~7.0"
+        "phpunit/phpunit": "~6.0 || ~7.0",
+        "jetbrains/phpstorm-stubs": "dev-master as v2019.3"
     },
     "autoload": {
         "psr-4": {
diff --git a/tests/CheckerTest.php b/tests/CheckerTest.php
index 815af74..66e609e 100644
--- a/tests/CheckerTest.php
+++ b/tests/CheckerTest.php
@@ -233,15 +233,9 @@ function fsockopen ($hostname, $port = null, &$errno = null, &$errstr = null, $t
 
         $phpCodeErrors = PhpCodeChecker::checkFromString($code, ['public'], true);
 
-        /*
         static::assertSame(
             [],
             $phpCodeErrors
         );
-         */
-
-        static::markTestIncomplete(
-            'bug is already reported: https://github.com/phpDocumentor/ReflectionDocBlock/issues/251'
-        );
     }
 }