diff --git a/infrastructure/web/client-notification.js b/infrastructure/web/client-notification.js
index 45b02a9..7fb2a15 100644
--- a/infrastructure/web/client-notification.js
+++ b/infrastructure/web/client-notification.js
@@ -1,5 +1,6 @@
 const EventEmitter = require('events')
 const debug = require('debug')('48hr-email:notification')
+require('events').defaultMaxListeners = 50;
 
 /**
  * Receives sign-ins from users and notifies them when new mails are available.
diff --git a/package-lock.json b/package-lock.json
index d2500e1..a515944 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18,7 +18,7 @@
         "express-validator": "^7.2.0",
         "helmet": "^3.23.3",
         "http-errors": "~1.6.2",
-        "imap-simple": "^1.6.3",
+        "imap-simple": "^4.3.0",
         "lodash": "^4.17.21",
         "mailparser": "^3.7.1",
         "mem": "^4.3.0",
@@ -2528,12 +2528,6 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
-    "node_modules/es6-promise": {
-      "version": "2.3.0",
-      "resolved": "https://registry.npmjs.org/es6-promise/-/es6-promise-2.3.0.tgz",
-      "integrity": "sha512-oyOjMhyKMLEjOOtvkwg0G4pAzLQ9WdbbeX7WdqKzvYXu+UFgD0Zo/Brq5Q49zNmnGPPzV5rmYvrr0jz1zWx8Iw==",
-      "license": "MIT"
-    },
     "node_modules/escalade": {
       "version": "3.2.0",
       "resolved": "https://registry.npmjs.org/escalade/-/escalade-3.2.0.tgz",
@@ -4590,17 +4584,17 @@
       }
     },
     "node_modules/imap-simple": {
-      "version": "1.6.3",
-      "resolved": "https://registry.npmjs.org/imap-simple/-/imap-simple-1.6.3.tgz",
-      "integrity": "sha512-QtLVLrtyLebWMYjIXhp4UMxjcQFV+bvBJBTtQF9YK+4m/sley55SxPAbrJOOzoBtozmY7oe81yBBiqzfmVJsaQ==",
+      "version": "4.3.0",
+      "resolved": "https://registry.npmjs.org/imap-simple/-/imap-simple-4.3.0.tgz",
+      "integrity": "sha512-SW3LtfEJFjlJKS/h2CmpX2IKpya2RXobR3ENJJW4iMQ3QYPxWxf5oeaz1K3P4eGUwfGEndkqt7uVDKnEyG9zeQ==",
       "license": "MIT",
       "dependencies": {
-        "es6-promise": "^2.0.1",
         "iconv-lite": "~0.4.13",
-        "imap": "^0.8.14",
+        "imap": "^0.8.18",
         "nodeify": "^1.0.0",
         "quoted-printable": "^1.0.0",
-        "utf8": "^2.1.1"
+        "utf8": "^2.1.1",
+        "uuencode": "0.0.4"
       }
     },
     "node_modules/import-fresh": {
@@ -8309,6 +8303,11 @@
         "node": ">= 0.4.0"
       }
     },
+    "node_modules/uuencode": {
+      "version": "0.0.4",
+      "resolved": "https://registry.npmjs.org/uuencode/-/uuencode-0.0.4.tgz",
+      "integrity": "sha512-yEEhCuCi5wRV7Z5ZVf9iV2gWMvUZqKJhAs1ecFdKJ0qzbyaVelmsE3QjYAamehfp9FKLiZbKldd+jklG3O0LfA=="
+    },
     "node_modules/validate-npm-package-license": {
       "version": "3.0.4",
       "resolved": "https://registry.npmjs.org/validate-npm-package-license/-/validate-npm-package-license-3.0.4.tgz",
diff --git a/package.json b/package.json
index 1d92fa7..dc0cbf5 100644
--- a/package.json
+++ b/package.json
@@ -1,9 +1,9 @@
 {
   "name": "48hr.email",
-  "version": "1.5.1",
+  "version": "1.5.2",
   "private": false,
   "scripts": {
-    "start": "node ./app.js",
+    "start": "node --trace-warnings ./app.js",
     "test": "xo",
     "debug": "node --nolazy --inspect-brk=9229 ./app.js"
   },
@@ -17,7 +17,7 @@
     "express-validator": "^7.2.0",
     "helmet": "^3.23.3",
     "http-errors": "~1.6.2",
-    "imap-simple": "^1.6.3",
+    "imap-simple": "^4.3.0",
     "lodash": "^4.17.21",
     "mailparser": "^3.7.1",
     "mem": "^4.3.0",