diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 95e7f1c..36c6171 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -26,12 +26,12 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php: ['7.4', '8.0', '8.1', '8.2', '8.3', '8.4' ]
+        php: ['7.4', '8.0', '8.1', '8.2', '8.3', '8.4', '8.5' ]
         min_stability: [ '' ]
         name_suffix: [ '' ]
         composer_flags: [ '' ]
         include:
-          - php: '8.4'
+          - php: '8.5'
             min_stability: 'dev'
             name_suffix: ' (dev deps)'
           - php: '7.4'
diff --git a/Processor.php b/Processor.php
index 6dc208f..04c11e8 100644
--- a/Processor.php
+++ b/Processor.php
@@ -92,7 +92,7 @@ private function processParams(array $config, array $expectedParams, array $actu
 
         $keepOutdatedParams = false;
         if (isset($config['keep-outdated'])) {
-            $keepOutdatedParams = (boolean) $config['keep-outdated'];
+            $keepOutdatedParams = (bool) $config['keep-outdated'];
         }
 
         if (!$keepOutdatedParams) {