diff --git a/composer.json b/composer.json
index b2f2d77..5c5ec6c 100644
--- a/composer.json
+++ b/composer.json
@@ -29,7 +29,7 @@
     "require": {
         "php": ">=7",
         "ext-intl": "*",
-        "pear/mail": ">=1.3",
+        "pear/mail": ">=2.0.0",
         "pear/mail_mime": ">=1.10.12",
         "composer-runtime-api": "*"
     },