diff --git a/package-lock.json b/package-lock.json
index 0f18fe6f..58534ea3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -88,9 +88,9 @@
       }
     },
     "nodemailer": {
-      "version": "6.4.16",
-      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.4.16.tgz",
-      "integrity": "sha512-68K0LgZ6hmZ7PVmwL78gzNdjpj5viqBdFqKrTtr9bZbJYj6BRj5W6WGkxXrEnUl3Co3CBXi3CZBUlpV/foGnOQ=="
+      "version": "6.4.17",
+      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.4.17.tgz",
+      "integrity": "sha512-89ps+SBGpo0D4Bi5ZrxcrCiRFaMmkCt+gItMXQGzEtZVR3uAD3QAQIDoxTWnx3ky0Dwwy/dhFrQ+6NNGXpw/qQ=="
     },
     "p-limit": {
       "version": "2.3.0",
diff --git a/package.json b/package.json
index b44e649e..0da8e572 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
   "homepage": "https://github.com/dawidd6/action-send-mail#readme",
   "dependencies": {
     "@actions/core": "^1.2.6",
-    "nodemailer": "^6.4.16",
+    "nodemailer": "^6.4.17",
     "showdown": "^1.9.1"
   }
 }