diff --git a/composer.json b/composer.json
index 895d5ff..d6ba1fb 100644
--- a/composer.json
+++ b/composer.json
@@ -36,7 +36,7 @@
         "spatie/backtrace": "^1.7.1",
         "spatie/ray": "^1.45.0",
         "symfony/stopwatch": "4.2|^5.1|^6.0|^7.0|^8.0",
-        "zbateson/mail-mime-parser": "^1.3.1|^2.0|^3.0"
+        "zbateson/mail-mime-parser": "^1.3.1|^2.0|^3.0|^4.0"
     },
     "require-dev": {
         "guzzlehttp/guzzle": "^7.3",