diff --git a/.github/workflows/bc.yml b/.github/workflows/bc.yml
index f8cc5648..0ea4a5c1 100644
--- a/.github/workflows/bc.yml
+++ b/.github/workflows/bc.yml
@@ -30,4 +30,4 @@ jobs:
       os: >-
         ['ubuntu-latest']
       php: >-
-        ['8.0']
+        ['8.4']
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e96052e5..68fac01f 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -31,4 +31,4 @@ jobs:
       os: >-
         ['ubuntu-latest', 'windows-latest']
       php: >-
-        ['8.0', '8.1', '8.2', '8.3']
+        ['8.0', '8.1', '8.2', '8.3', '8.4']
diff --git a/.github/workflows/composer-require-checker.yml b/.github/workflows/composer-require-checker.yml
index 5473ec96..632bfd48 100644
--- a/.github/workflows/composer-require-checker.yml
+++ b/.github/workflows/composer-require-checker.yml
@@ -31,4 +31,4 @@ jobs:
       os: >-
         ['ubuntu-latest']
       php: >-
-        ['8.0', '8.1', '8.2', '8.3']
+        ['8.0', '8.1', '8.2', '8.3', '8.4']
diff --git a/.github/workflows/rector.yml b/.github/workflows/rector.yml
index 457772af..5d6931d5 100644
--- a/.github/workflows/rector.yml
+++ b/.github/workflows/rector.yml
@@ -21,4 +21,4 @@ jobs:
       os: >-
         ['ubuntu-latest']
       php: >-
-        ['8.3']
+        ['8.4']
diff --git a/.github/workflows/static.yml b/.github/workflows/static.yml
index e34190e8..14d169ff 100644
--- a/.github/workflows/static.yml
+++ b/.github/workflows/static.yml
@@ -29,7 +29,7 @@ jobs:
       os: >-
         ['ubuntu-latest']
       php: >-
-        ['8.1', '8.2', '8.3']
+        ['8.1', '8.2', '8.3', '8.4']
   psalm80:
     uses: yiisoft/actions/.github/workflows/psalm.yml@master
     with:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index f93596f7..d1703ce0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 ## 2.3.1 under development
 
+- Chg #228: Change PHP constraint in `composer.json` to `8.0 - 8.4` (@vjik)
 - Enh #226: Check empty string as key in command map in `CommandLoader` validation (@vjik)
 - Bug #224: Fix typo in `UNAVAILABLE` exit code reason (@vjik)
 - Bug #227: Throw `RuntimeException` in `ServeCommand` when it wasn't possible to find out the current directory (@vjik)
diff --git a/composer.json b/composer.json
index 24c87e48..bf911940 100644
--- a/composer.json
+++ b/composer.json
@@ -27,23 +27,23 @@
         }
     ],
     "require": {
-        "php": "^8.0",
-        "psr/container": "^1.0|^2.0",
+        "php": "8.0 - 8.4",
+        "psr/container": "^1.0 || ^2.0",
         "psr/event-dispatcher": "^1.0",
-        "psr/log": "^1.0|^2.0|^3.0",
-        "symfony/console": "^5.4|^6.0|^7.0",
-        "symfony/event-dispatcher-contracts": "^2.2|^3.0",
+        "psr/log": "^1.0 || ^2.0 || ^3.0",
+        "symfony/console": "^5.4 || ^6.0 || ^7.0",
+        "symfony/event-dispatcher-contracts": "^2.2 || ^3.0",
         "yiisoft/friendly-exception": "^1.0"
     },
     "require-dev": {
-        "maglnet/composer-require-checker": "^3.8|^4.4",
-        "phpunit/phpunit": "^9.5",
-        "rector/rector": "^2.0.7",
-        "roave/infection-static-analysis-plugin": "^1.16",
-        "vimeo/psalm": "^4.30|^5.20",
-        "yiisoft/config": "^1.3",
-        "yiisoft/di": "^1.2",
-        "yiisoft/test-support": "^3.0"
+        "maglnet/composer-require-checker": "^4.4",
+        "phpunit/phpunit": "^9.6.22",
+        "rector/rector": "^2.0.11",
+        "roave/infection-static-analysis-plugin": "^1.25",
+        "vimeo/psalm": "^4.30 || ^5.26.1 || ^6.10",
+        "yiisoft/config": "^1.5",
+        "yiisoft/di": "^1.2.1",
+        "yiisoft/test-support": "^3.0.2"
     },
     "autoload": {
         "psr-4": {
diff --git a/psalm.xml b/psalm.xml
index b48c894e..2b2e0b2b 100644
--- a/psalm.xml
+++ b/psalm.xml
@@ -3,6 +3,7 @@
     errorLevel="1"
     findUnusedBaselineEntry="true"
     findUnusedCode="false"
+    ensureOverrideAttribute="false"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xmlns="https://getpsalm.org/schema/config"
     xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
diff --git a/src/Command/Serve.php b/src/Command/Serve.php
index 158d5829..ffbd0c37 100644
--- a/src/Command/Serve.php
+++ b/src/Command/Serve.php
@@ -158,15 +158,22 @@ protected function execute(InputInterface $input, OutputInterface $output): int
         }
         $outputTable = [];
         $outputTable[] = ['PHP', PHP_VERSION];
-        $outputTable[] = [
-            'xDebug',
-            $xDebugInstalled ? sprintf(
+
+        if ($xDebugInstalled) {
+            /**
+             * @var string $xDebugVersion Here we know that xDebug is installed, so `phpversion` will not return false.
+             */
+            $xDebugVersion = phpversion('xdebug');
+            $xDebugLine = sprintf(
                 '%s, %s',
-                phpversion('xdebug'),
+                $xDebugVersion,
                 $xDebugEnabled ? '<info> Enabled </>' : '<error> Disabled </>',
-            ) : '<error>Not installed</>',
-            '--xdebug',
-        ];
+            );
+        } else {
+            $xDebugLine = '<error>Not installed</>';
+        }
+        $outputTable[] = ['xDebug', $xDebugLine, '--xdebug'];
+
         $outputTable[] = ['Workers', $isLinux ? $workers : 'Not supported', '--workers, -w'];
         $outputTable[] = ['Address', $address];
         $outputTable[] = ['Document root', $documentRoot, '--docroot, -t'];
diff --git a/src/ExitCode.php b/src/ExitCode.php
index e0589093..56a4ced5 100644
--- a/src/ExitCode.php
+++ b/src/ExitCode.php
@@ -26,6 +26,8 @@
  * ```
  *
  * @see https://man.openbsd.org/sysexits
+ *
+ * @final See https://github.com/yiisoft/yii-console/issues/225
  */
 class ExitCode
 {