diff --git a/tests/units/composer.json b/tests/units/composer.json
index 3c2ad54579..830f1d4d1b 100644
--- a/tests/units/composer.json
+++ b/tests/units/composer.json
@@ -10,7 +10,7 @@
     "require": {
         "php": ">=8.1.0",
         "phpunit/phpunit": "^10.5.29",
-        "phpstan/phpstan": "1.11.11"
+        "phpstan/phpstan": "2.1.2"
     },
     "autoload": {
         "classmap": ["../../lizmap/modules/lizmap/classes/" ],