diff --git a/src/StaticPHP/Command/Dev/GenExtTestMatrixCommand.php b/src/StaticPHP/Command/Dev/GenExtTestMatrixCommand.php
index 859ad372..1271136e 100644
--- a/src/StaticPHP/Command/Dev/GenExtTestMatrixCommand.php
+++ b/src/StaticPHP/Command/Dev/GenExtTestMatrixCommand.php
@@ -48,6 +48,7 @@ class GenExtTestMatrixCommand extends BaseCommand
      */
     private const array STANDALONE = [
         'grpc',
+        'glfw',
     ];
 
     protected bool $no_motd = true;