diff --git a/html/package-lock.json b/html/package-lock.json
index a62379d..04e4609 100644
--- a/html/package-lock.json
+++ b/html/package-lock.json
@@ -561,9 +561,9 @@
       "dev": true
     },
     "terser": {
-      "version": "4.6.13",
-      "resolved": "https://registry.npmjs.org/terser/-/terser-4.6.13.tgz",
-      "integrity": "sha512-wMvqukYgVpQlymbnNbabVZbtM6PN63AzqexpwJL8tbh/mRT9LE5o+ruVduAGL7D6Fpjl+Q+06U5I9Ul82odAhw==",
+      "version": "4.8.1",
+      "resolved": "https://registry.npmjs.org/terser/-/terser-4.8.1.tgz",
+      "integrity": "sha512-4GnLC0x667eJG0ewJTa6z/yXrbLGv80D9Ru6HIpCQmO+Q4PfEtBFi0ObSckqwL6VyQv/7ENJieXHo2ANmdQwgw==",
       "dev": true,
       "requires": {
         "commander": "^2.20.0",