diff --git a/Chapter12/Exercise12.04/ts_app/package-lock.json b/Chapter12/Exercise12.04/ts_app/package-lock.json
index 01b83c3..87a635a 100644
--- a/Chapter12/Exercise12.04/ts_app/package-lock.json
+++ b/Chapter12/Exercise12.04/ts_app/package-lock.json
@@ -4083,9 +4083,9 @@
       "dev": true
     },
     "terser": {
-      "version": "4.2.1",
-      "resolved": "https://registry.npmjs.org/terser/-/terser-4.2.1.tgz",
-      "integrity": "sha512-cGbc5utAcX4a9+2GGVX4DsenG6v0x3glnDi5hx8816X1McEAwPlPgRtXPJzSBsbpILxZ8MQMT0KvArLuE0HP5A==",
+      "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",