diff --git a/phpstan.neon b/phpstan.neon
index 20e86de6cf5..f7855d22f53 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -1,6 +1,7 @@
 parameters:
     autoload_files:
         - %rootDir%/../../../tests/bootstrap.php
+        - %rootDir%/../../../src/TestSuite/IntegrationTestCase.php
     ignoreErrors:
         - '#Function wincache_ucache_[a-zA-Z0-9_]+ not found#'
         - '#Function xcache_[a-zA-Z0-9_]+ not found#'