diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 9bbb6c6..1666fa9 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -24,7 +24,7 @@ Add required dependencies:
 ```
 "require": {
     "firebase/php-jwt": "^5.2",
-    "nesbot/carbon": "^2.0"
+    "nesbot/carbon": "^2.0|^3.0"
 },
 ```
 
diff --git a/composer.json b/composer.json
index 02b66bb..349290b 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
         "illuminate/config": "~6.0|~7.0|~8.0|~9.0|~10.0|~11.0",
         "illuminate/http": "~6.0|~7.0|~8.0|~9.0|~10.0|~11.0",
         "illuminate/routing": "~6.0|~7.0|~8.0|~9.0|~10.0|~11.0",
-        "nesbot/carbon": "^2.0",
+        "nesbot/carbon": "^2.0|^3.0",
         "guzzlehttp/guzzle": "~6.0|~7.0"
     },
     "require-dev": {