diff --git a/composer.json b/composer.json
index 10b3e5e9..a432a4fa 100644
--- a/composer.json
+++ b/composer.json
@@ -33,7 +33,7 @@
         "dealerdirect/phpcodesniffer-composer-installer": ">= 0.7.0",
         "phpunit/phpunit": "~9",
         "phpunit/phpcov": "*",
-        "vimeo/psalm": "~5.14.0",
+        "vimeo/psalm": "~5.15.0",
         "psalm/plugin-phpunit": "*",
         "aodto/phasher": "dev-master"
     },