diff --git a/package-lock.json b/package-lock.json
index c9f4df3..f7d565d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "node-tnef",
-  "version": "1.3.3",
+  "version": "1.4.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -3107,10 +3107,9 @@
       }
     },
     "moment": {
-      "version": "2.22.2",
-      "resolved": "https://registry.npmjs.org/moment/-/moment-2.22.2.tgz",
-      "integrity": "sha1-PCV/mDn8DpP/UxSWMiOeuQeD/2Y=",
-      "optional": true
+      "version": "2.29.4",
+      "resolved": "https://registry.npmjs.org/moment/-/moment-2.29.4.tgz",
+      "integrity": "sha512-5LC9SOxjSc2HF6vO2CyuTDNivEdoz2IvyJJGj6X8DJ0eFyfszE0QiEd+iXmBvUP3WHxSjFH/vIsA0EN00cgr8w=="
     },
     "ms": {
       "version": "2.0.0",