diff --git a/1_use-at-webpack/package-lock.json b/1_use-at-webpack/package-lock.json
index 6a31622..60b2fe3 100644
--- a/1_use-at-webpack/package-lock.json
+++ b/1_use-at-webpack/package-lock.json
@@ -4737,9 +4737,9 @@
       "dev": true
     },
     "terser": {
-      "version": "4.6.1",
-      "resolved": "http://r.cnpmjs.org/terser/download/terser-4.6.1.tgz",
-      "integrity": "sha1-kT414NOKdShaeRO6AddTxAievb0=",
+      "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",
@@ -4749,8 +4749,8 @@
       "dependencies": {
         "source-map": {
           "version": "0.6.1",
-          "resolved": "http://r.cnpmjs.org/source-map/download/source-map-0.6.1.tgz",
-          "integrity": "sha1-dHIq8y6WFOnCh6jQu95IteLxomM=",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
           "dev": true
         }
       }