diff --git a/package-lock.json b/package-lock.json
index c912f734..f51cc209 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,9 +10,9 @@
       "integrity": "sha512-ZQYitnqiyBc3D+k7LsgSBmMDVkOVidaagDG7j3fOym77jNunWRuYx7VSHa9GNfFZh+zh61xsCjRj4JxMZlDqTA=="
     },
     "nodemailer": {
-      "version": "6.4.15",
-      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.4.15.tgz",
-      "integrity": "sha512-2/z13dBTWdgTRlxVMAK6C13dCI22GEShET4+jFLlQsxpblxYhojnucfcTZO1QBu5CsHvABsBj2JCGO3vl0HSQA=="
+      "version": "6.4.16",
+      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.4.16.tgz",
+      "integrity": "sha512-68K0LgZ6hmZ7PVmwL78gzNdjpj5viqBdFqKrTtr9bZbJYj6BRj5W6WGkxXrEnUl3Co3CBXi3CZBUlpV/foGnOQ=="
     }
   }
 }
diff --git a/package.json b/package.json
index 2fdfaa5a..c46b15be 100644
--- a/package.json
+++ b/package.json
@@ -18,6 +18,6 @@
   "homepage": "https://github.com/dawidd6/action-send-mail#readme",
   "dependencies": {
     "@actions/core": "^1.2.6",
-    "nodemailer": "^6.4.15"
+    "nodemailer": "^6.4.16"
   }
 }