diff --git a/.github/workflows/basics.yml b/.github/workflows/basics.yml
index d897b0b..46a9837 100644
--- a/.github/workflows/basics.yml
+++ b/.github/workflows/basics.yml
@@ -120,7 +120,7 @@ jobs:
         with:
           php-version: 'latest'
           coverage: none
-          tools: phpstan
+          tools: phpstan:1.x
 
       # Install dependencies and handle caching in one go.
       # Dependencies need to be installed to make sure the PHPCS and PHPUnit classes are recognized.