diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 62101ac..db3e70d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -4,14 +4,14 @@ on: [push, pull_request]
 
 jobs:
   php-cs-fixer:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
 
     steps:
       # This is required as this package does not support PHP 8 (yet)
-      - name: Setup PHP 7.4
+      - name: Setup PHP 8.1
         uses: shivammathur/setup-php@v2
         with:
-          php-version: '7.4'
+          php-version: '8.1'
 
       - name: Checkout Code
         uses: actions/checkout@v2
diff --git a/stubs/ibis.php b/stubs/ibis.php
index 79f8f0f..28a5e38 100644
--- a/stubs/ibis.php
+++ b/stubs/ibis.php
@@ -55,7 +55,7 @@
         [80, 85],
         [100, 103],
     ],
-	
+
     /**
      * default commonmark
      */