diff --git a/.github/workflows/flex.yml b/.github/workflows/flex.yml
index 2cd9938..68c2d8e 100644
--- a/.github/workflows/flex.yml
+++ b/.github/workflows/flex.yml
@@ -7,7 +7,7 @@ jobs:
         strategy:
             matrix:
                 operating-system: [ubuntu-latest]
-                php-versions: ['8.1']
+                php-versions: ['8.1', '8.2']
                 composer-options: ['']
                 composer-versions: ['composer:v2']
             fail-fast: false
@@ -31,7 +31,7 @@ jobs:
                   key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}
                   restore-keys: ${{ runner.os }}-composer-
             - name: Install dependencies
-              run: composer update --prefer-dist --no-progress --no-suggest ${{ matrix.composer-options }}
+              run: composer update --prefer-dist --no-progress --ignore-platform-req=php+ ${{ matrix.composer-options }}
             - name: Build flex files
               run: php scripts/build-flex.php
             - name: Check if flex files are up to date
diff --git a/composer.json b/composer.json
index e2776e0..6f797bc 100644
--- a/composer.json
+++ b/composer.json
@@ -24,7 +24,8 @@
         "sort-packages": true,
         "allow-plugins": {
             "phpro/grumphp-shim": true,
-            "phpstan/extension-installer": true
+            "phpstan/extension-installer": true,
+            "symfony/flex": true
         }
     },
     "extra": {
@@ -34,6 +35,6 @@
         }
     },
     "require-dev": {
-        "azjezz/psl": "^1.9"
+        "azjezz/psl": "^2.1"
     }
 }
diff --git a/scripts/build-flex.php b/scripts/build-flex.php
index fcdd1bb..7e71dea 100644
--- a/scripts/build-flex.php
+++ b/scripts/build-flex.php
@@ -1,10 +1,11 @@
 <?php
 
 use Psl\Collection\Map;
+use Psl\File\WriteMode;
 use function Psl\Dict\reindex;
 use function Psl\Filesystem\read_directory;
-use function Psl\Filesystem\read_file;
-use function Psl\Filesystem\write_file;
+use function Psl\File\read;
+use function Psl\File\write;
 use function Psl\Iter\reduce_with_keys;
 use function Psl\Json\encode;
 use function Psl\Str\replace;
@@ -22,7 +23,7 @@
 
 
 $placeFileInline = static fn(string $file): array => [
-    'contents' => explode("\n", read_file($file)),
+    'contents' => explode("\n", read($file)),
     'executable' => false,
 ];
 
@@ -68,13 +69,13 @@
     $recipesDir . '/' . replace($package, '/', '.') . '.' . $version . '.json';
 
 $writeJson = static function (string $file, array $contents): void {
-    write_file($file, encode(
+    write($file, encode(
         [
             'WARNING' => 'This file is auto-generated and may only be changed by computers!',
             ...$contents,
         ],
         true
-    ));
+    ), WriteMode::TRUNCATE);
 };
 
 $index = [];