diff --git a/composer.json b/composer.json
index fe74db6..1771081 100644
--- a/composer.json
+++ b/composer.json
@@ -23,7 +23,7 @@
   },
   "require-dev": {
     "phpunit/phpunit": "^7.0",
-    "satooshi/php-coveralls": "~1.0"
+    "satooshi/php-coveralls": "^2.0"
   },
   "autoload": {
     "psr-4": {