diff --git a/composer.json b/composer.json
index b50768e..a7e0366 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,7 @@
     "license": "MIT",
     "require": {
         "php": ">=5.4",
-        "nesbot/carbon": "^1.25"
+        "nesbot/carbon": "1.* || 2.*"
     },
     "autoload": {
         "psr-4": {