diff --git a/quirks/password-rules.json b/quirks/password-rules.json
index 14862b2d..24e1af6a 100644
--- a/quirks/password-rules.json
+++ b/quirks/password-rules.json
@@ -974,6 +974,9 @@
     "secure.snnow.ca": {
         "password-rules": "minlength: 7; maxlength: 16; required: digit; allowed: lower, upper;"
     },
+    "security-settings.web.vanguard.com": {
+        "password-rules": "minlength: 8; maxlength: 20; required: lower; required: upper; required: digit; required: special;"
+    },
     "sephora.com": {
         "password-rules": "minlength: 6; maxlength: 12;"
     },