diff --git a/composer.json b/composer.json
index 5d3e5b43..444d6889 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
     ],
     "require": {
         "php": ">=5.4.0",
-        "topthink/think-installer": "*"
+        "topthink/think-installer": "~1.0"
     },
     "require-dev": {
         "phpunit/phpunit": "4.8.*",