diff --git a/composer.json b/composer.json
index 0671c53..8194bc5 100644
--- a/composer.json
+++ b/composer.json
@@ -68,7 +68,7 @@
 		"sirbrillig/phpcs-import-detection": "^1.2",
 		"sirbrillig/phpcs-variable-analysis": "^2.8",
 		"szepeviktor/phpstan-wordpress": "^1.3",
-		"vimeo/psalm": "^0.3.14",
+		"vimeo/psalm": "^5.25",
 		"wp-phpunit/wp-phpunit": "^6.1",
 		"yoast/phpunit-polyfills": "^1.0"
 	},