diff --git a/composer.json b/composer.json
index f6b03f3..69c024e 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
   "require-dev": {
     "phpunit/phpunit": "^9.0",
     "php-coveralls/php-coveralls": "^2.0",
-    "vimeo/psalm": "5.7.5"
+    "vimeo/psalm": "5.15.0"
   },
   "autoload": {
     "psr-4": {