diff --git a/.github/workflows/php.yml b/.github/workflows/php.yml
index 02aa7be7a..a3e4f0016 100644
--- a/.github/workflows/php.yml
+++ b/.github/workflows/php.yml
@@ -15,6 +15,7 @@ jobs:
       matrix:
         php-version:
           - "8.0"
+          - "8.1"
 
     services:
       mysql:
@@ -75,7 +76,7 @@ jobs:
     strategy:
       matrix:
         php-version:
-          - "8.0"
+          - "8.1"
 
     name: PHP-CS-Fixer
     runs-on: ubuntu-latest
@@ -111,6 +112,7 @@ jobs:
       matrix:
         php-version:
           - "8.0"
+          - "8.1"
 
     services:
       mysql:
diff --git a/phpstan-dba-bootstrap.php b/phpstan-dba-bootstrap.php
index 770e49485..dc18d2bc0 100644
--- a/phpstan-dba-bootstrap.php
+++ b/phpstan-dba-bootstrap.php
@@ -15,7 +15,7 @@
 
 $config = new RuntimeConfiguration();
 $config->debugMode(true);
-$config->stringifyTypes(true); // TODO remove when upgrading to PHP 8.1
+$config->stringifyTypes(PHP_VERSION_ID <= 80100); // TODO remove when upgrading to PHP 8.1
 
 $dsn = parse_url($_SERVER['DATABASE_URL']);