diff --git a/composer.json b/composer.json
index c538810..882e2b0 100644
--- a/composer.json
+++ b/composer.json
@@ -14,7 +14,7 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^9.6.7",
-        "vimeo/psalm": "^5.9",
+        "vimeo/psalm": "^5.9 || ^6.0",
         "webimpress/coding-standard": "^1.3.1"
     },
     "autoload": {
diff --git a/composer.lock b/composer.lock
index 3a7663e..41e0203 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": "50e87d80e3a68bdf4c74866b20f80eb8",
+    "content-hash": "beae8b2bd4ee6f0f2c0636ddf3e0d382",
     "packages": [],
     "packages-dev": [
         {