diff --git a/lib/mail-parser.js b/lib/mail-parser.js
index 86850ea..ff5ea73 100644
--- a/lib/mail-parser.js
+++ b/lib/mail-parser.js
@@ -5,7 +5,7 @@ const libmime = require('libmime');
 const addressparser = require('nodemailer/lib/addressparser');
 const Transform = require('stream').Transform;
 const Splitter = mailsplit.Splitter;
-const punycode = require('punycode');
+const punycode = require('punycode/');
 const FlowedDecoder = require('mailsplit/lib/flowed-decoder');
 const StreamHash = require('./stream-hash');
 const iconv = require('iconv-lite');
diff --git a/package-lock.json b/package-lock.json
index 3f0eed7..0202732 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -17,6 +17,7 @@
                 "linkify-it": "5.0.0",
                 "mailsplit": "5.4.0",
                 "nodemailer": "6.9.9",
+                "punycode": "2.3.1",
                 "tlds": "1.248.0"
             },
             "devDependencies": {
@@ -3763,7 +3764,6 @@
             "version": "2.3.1",
             "resolved": "https://registry.npmjs.org/punycode/-/punycode-2.3.1.tgz",
             "integrity": "sha512-vYt7UD1U9Wg6138shLtLOvdAu+8DsC/ilFtEVHcH+wydcSpNE20AfSOduf6MkRFahL5FY7X1oU7nKVZFtfq8Fg==",
-            "dev": true,
             "engines": {
                 "node": ">=6"
             }
diff --git a/package.json b/package.json
index ab41fc9..c348e30 100644
--- a/package.json
+++ b/package.json
@@ -25,6 +25,7 @@
         "linkify-it": "5.0.0",
         "mailsplit": "5.4.0",
         "nodemailer": "6.9.9",
+        "punycode": "2.3.1",
         "tlds": "1.248.0"
     },
     "devDependencies": {