diff --git a/composer.json b/composer.json
index c9ed7ce..641abdb 100644
--- a/composer.json
+++ b/composer.json
@@ -14,7 +14,7 @@
     "license": "MIT",
     "require": {
         "php": "^7.0",
-        "cakephp/chronos": "^1.2"
+        "cakephp/chronos": "^1.2|^2"
     },
     "require-dev": {
         "overtrue/phplint": "^1.1",