diff --git a/lib/composer/composer/InstalledVersions.php b/lib/composer/composer/InstalledVersions.php
index 8d3f8acd3ff38..2052022fd8e1e 100644
--- a/lib/composer/composer/InstalledVersions.php
+++ b/lib/composer/composer/InstalledVersions.php
@@ -277,7 +277,7 @@ public static function getRawData()
         if (null === self::$installed) {
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
-            if (substr(__DIR__, -8, 1) !== 'C' && is_file(__DIR__ . '/installed.php')) {
+            if (substr(__DIR__, -8, 1) !== 'C') {
                 self::$installed = include __DIR__ . '/installed.php';
             } else {
                 self::$installed = array();
@@ -378,7 +378,7 @@ private static function getInstalled()
         if (null === self::$installed) {
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
-            if (substr(__DIR__, -8, 1) !== 'C' && is_file(__DIR__ . '/installed.php')) {
+            if (substr(__DIR__, -8, 1) !== 'C') {
                 /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
                 $required = require __DIR__ . '/installed.php';
                 self::$installed = $required;
diff --git a/lib/composer/composer/installed.json b/lib/composer/composer/installed.json
index f20a6c47c6d4f..d8ad3e7828fca 100644
--- a/lib/composer/composer/installed.json
+++ b/lib/composer/composer/installed.json
@@ -1,5 +1,68 @@
 {
-    "packages": [],
-    "dev": false,
-    "dev-package-names": []
+    "packages": [
+        {
+            "name": "bamarni/composer-bin-plugin",
+            "version": "1.9.1",
+            "version_normalized": "1.9.1.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/bamarni/composer-bin-plugin.git",
+                "reference": "641d0663f5ac270b1aeec4337b7856f76204df47"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/bamarni/composer-bin-plugin/zipball/641d0663f5ac270b1aeec4337b7856f76204df47",
+                "reference": "641d0663f5ac270b1aeec4337b7856f76204df47",
+                "shasum": ""
+            },
+            "require": {
+                "composer-plugin-api": "^2.0",
+                "php": "^7.2.5 || ^8.0"
+            },
+            "require-dev": {
+                "composer/composer": "^2.2.26",
+                "ext-json": "*",
+                "phpstan/extension-installer": "^1.1",
+                "phpstan/phpstan": "^1.8 || ^2.0",
+                "phpstan/phpstan-phpunit": "^1.1 || ^2.0",
+                "phpunit/phpunit": "^8.5 || ^9.6 || ^10.0",
+                "symfony/console": "^2.8.52 || ^3.4.35 || ^4.4 || ^5.0 || ^6.0",
+                "symfony/finder": "^2.8.52 || ^3.4.35 || ^4.4 || ^5.0 || ^6.0",
+                "symfony/process": "^2.8.52 || ^3.4.35 || ^4.4 || ^5.0 || ^6.0"
+            },
+            "time": "2026-02-04T10:18:12+00:00",
+            "type": "composer-plugin",
+            "extra": {
+                "class": "Bamarni\\Composer\\Bin\\BamarniBinPlugin"
+            },
+            "installation-source": "dist",
+            "autoload": {
+                "psr-4": {
+                    "Bamarni\\Composer\\Bin\\": "src"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "No conflicts for your bin dependencies",
+            "keywords": [
+                "composer",
+                "conflict",
+                "dependency",
+                "executable",
+                "isolation",
+                "tool"
+            ],
+            "support": {
+                "issues": "https://github.com/bamarni/composer-bin-plugin/issues",
+                "source": "https://github.com/bamarni/composer-bin-plugin/tree/1.9.1"
+            },
+            "install-path": "../bamarni/composer-bin-plugin"
+        }
+    ],
+    "dev": true,
+    "dev-package-names": [
+        "bamarni/composer-bin-plugin"
+    ]
 }
diff --git a/lib/composer/composer/installed.php b/lib/composer/composer/installed.php
index 87357f5e32faa..2b489e6cf5207 100644
--- a/lib/composer/composer/installed.php
+++ b/lib/composer/composer/installed.php
@@ -3,21 +3,30 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => '671cec33f134e670bb21c5e3c49c685bd78fc339',
+        'reference' => '9cd3177bb4367020b3a2c6dc853ef849feb70c8b',
         'type' => 'library',
         'install_path' => __DIR__ . '/../../../',
         'aliases' => array(),
-        'dev' => false,
+        'dev' => true,
     ),
     'versions' => array(
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => '671cec33f134e670bb21c5e3c49c685bd78fc339',
+            'reference' => '9cd3177bb4367020b3a2c6dc853ef849feb70c8b',
             'type' => 'library',
             'install_path' => __DIR__ . '/../../../',
             'aliases' => array(),
             'dev_requirement' => false,
         ),
+        'bamarni/composer-bin-plugin' => array(
+            'pretty_version' => '1.9.1',
+            'version' => '1.9.1.0',
+            'reference' => '641d0663f5ac270b1aeec4337b7856f76204df47',
+            'type' => 'composer-plugin',
+            'install_path' => __DIR__ . '/../bamarni/composer-bin-plugin',
+            'aliases' => array(),
+            'dev_requirement' => true,
+        ),
     ),
 );