diff --git a/composer.json b/composer.json
index cfa9ced..059d4bc 100644
--- a/composer.json
+++ b/composer.json
@@ -29,7 +29,7 @@
   },
   "require-dev": {
     "phpunit/phpunit": "~4.4",
-    "satooshi/php-coveralls": "dev-master",
+    "satooshi/php-coveralls": "~0.1",
     "squizlabs/php_codesniffer": "~2.0",
     "apigen/apigen": "~4.0"
   },