diff --git a/composer.json b/composer.json
index 5a90530..ad19d6a 100644
--- a/composer.json
+++ b/composer.json
@@ -23,7 +23,7 @@
 		"nextcloud/coding-standard": "^1.3.2",
 		"nextcloud/ocp": "^30.0.6",
 		"nextcloud/rector": "^0.3.1",
-		"phpstan/phpstan": "^1.12",
+		"phpstan/phpstan": "~1.12.18",
 		"rector/rector": "~1.2.10",
 		"roave/security-advisories": "dev-latest"
 	},
diff --git a/composer.lock b/composer.lock
index 8c1ec1e..c2552af 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "d890f0bf3b6cf587949ed879b4987cac",
+    "content-hash": "86cc7e94ea3eb4dc1a44d0d20fc81674",
     "packages": [],
     "packages-dev": [
         {