diff --git a/composer.json b/composer.json
index e68ea81..00e312f 100755
--- a/composer.json
+++ b/composer.json
@@ -13,7 +13,7 @@
         "php": ">= 5.5.9",
         "vierbergenlars/php-semver": "3.0.*",
         "desarrolla2/cache": "2.1.*",
-        "monolog/monolog": "1.21.*"
+        "monolog/monolog": "1.21.* - 1.22.*"
     },
     "require-dev": {
         "phpunit/phpunit": "4.8.*"