diff --git a/viz/package-lock.json b/viz/package-lock.json
index ba13000..4b37f4e 100644
--- a/viz/package-lock.json
+++ b/viz/package-lock.json
@@ -9619,22 +9619,14 @@
       "dev": true
     },
     "terser": {
-      "version": "4.3.1",
-      "resolved": "https://registry.npmjs.org/terser/-/terser-4.3.1.tgz",
-      "integrity": "sha512-pnzH6dnFEsR2aa2SJaKb1uSCl3QmIsJ8dEkj0Fky+2AwMMcC9doMqLOQIH6wVTEKaVfKVvLSk5qxPBEZT9mywg==",
+      "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",
         "source-map": "~0.6.1",
         "source-map-support": "~0.5.12"
-      },
-      "dependencies": {
-        "commander": {
-          "version": "2.20.0",
-          "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.0.tgz",
-          "integrity": "sha512-7j2y+40w61zy6YC2iRNpUe/NwhNyoXrYpHMrSunaMG64nRnaf96zO/KMQR4OyN/UnE5KLyEBnKHd4aG3rskjpQ==",
-          "dev": true
-        }
       }
     },
     "terser-webpack-plugin": {