diff --git a/composer.json b/composer.json
index b9c00f29..d6cbf3bd 100644
--- a/composer.json
+++ b/composer.json
@@ -28,7 +28,7 @@
         "php":  ">7.2.0",
         "php-coveralls/php-coveralls" : "*",
         "phpunit/phpunit": "^6.0",
-        "vimeo/psalm":"3.*",
+        "vimeo/psalm":"3.0.8",
         "zendframework/zendframework1": "^1.12.0"
     },
     "autoload": {