diff --git a/composer.json b/composer.json
index abd69f0..c321e6d 100644
--- a/composer.json
+++ b/composer.json
@@ -20,7 +20,7 @@
 	"require-dev": {
 		"humanmade/coding-standards": "^1.2",
 		"phpunit/phpunit": "^9.0",
-		"psalm/plugin-phpunit": "^0.15.1"
+		"psalm/plugin-phpunit": "^0.18.4"
 	},
 	"extra": {
 		"psalm" : {