diff --git a/composer.json b/composer.json
index 87de1c0..6c7b777 100644
--- a/composer.json
+++ b/composer.json
@@ -14,7 +14,7 @@
         "illuminate/console": "~5.1|^6.0|^7.0",
         "illuminate/contracts": "~5.1|^6.0|^7.0",
         "illuminate/support": "~5.1|^6.0|^7.0",
-        "psy/psysh": "0.7.*|0.8.*|0.9.*",
+        "psy/psysh": "^0.9.0",
         "symfony/var-dumper": "^3.0|^4.0"
     },
     "require-dev": {