diff --git a/package-lock.json b/package-lock.json
index 4d72fdb..40f2c67 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5514,9 +5514,9 @@
       "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w="
     },
     "source-map-support": {
-      "version": "0.5.13",
-      "resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.5.13.tgz",
-      "integrity": "sha512-SHSKFHadjVA5oR4PPqhtAVdcBWwRYVd6g6cAXnIbRiIwc2EhPrTuKUBdSLvlEKyIP3GCf89fltvcZiP9MMFA1w==",
+      "version": "0.5.21",
+      "resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.5.21.tgz",
+      "integrity": "sha512-uBHU3L3czsIyYXKX88fdrGovxdSCoTGDRZ6SYXtSRxLZUzHg5P/66Ht6uoUlHu9EZod+inXhKo3qQgwXUT/y1w==",
       "requires": {
         "buffer-from": "^1.0.0",
         "source-map": "^0.6.0"
@@ -5723,13 +5723,13 @@
       }
     },
     "terser": {
-      "version": "3.17.0",
-      "resolved": "https://registry.npmjs.org/terser/-/terser-3.17.0.tgz",
-      "integrity": "sha512-/FQzzPJmCpjAH9Xvk2paiWrFq+5M6aVOf+2KRbwhByISDX/EujxsK+BAvrhb6H+2rtrLCHK9N01wO014vrIwVQ==",
+      "version": "4.8.1",
+      "resolved": "https://registry.npmjs.org/terser/-/terser-4.8.1.tgz",
+      "integrity": "sha512-4GnLC0x667eJG0ewJTa6z/yXrbLGv80D9Ru6HIpCQmO+Q4PfEtBFi0ObSckqwL6VyQv/7ENJieXHo2ANmdQwgw==",
       "requires": {
-        "commander": "^2.19.0",
+        "commander": "^2.20.0",
         "source-map": "~0.6.1",
-        "source-map-support": "~0.5.10"
+        "source-map-support": "~0.5.12"
       },
       "dependencies": {
         "source-map": {
diff --git a/package.json b/package.json
index 8204896..d1f8c05 100644
--- a/package.json
+++ b/package.json
@@ -43,7 +43,7 @@
     "serve-favicon": "^2.4.2",
     "sha1": "^1.1.1",
     "tar": "^4.4.8",
-    "terser": "^3.14.1"
+    "terser": "^4.8.1"
   },
   "devDependencies": {
     "eslint": "^5.12.0"