diff --git a/package-lock.json b/package-lock.json
index 09ab2d4..2af0d33 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3282,23 +3282,24 @@
       }
     },
     "gulp-terser": {
-      "version": "1.1.7",
-      "resolved": "https://registry.npmjs.org/gulp-terser/-/gulp-terser-1.1.7.tgz",
-      "integrity": "sha512-u577eHpz9zHaO7SiJJM5Rd1deBJastfNJ41pSfUpTagOtCommfDq00VK4JPwwTkQ++IGJbkFBen1C+vDxTO9gg==",
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/gulp-terser/-/gulp-terser-1.2.0.tgz",
+      "integrity": "sha512-lf+jE2DALg2w32p0HRiYMlFYRYelKZPNunHp2pZccCYrrdCLOs0ItbZcN63yr2pbz116IyhUG9mD/QbtRO1FKA==",
       "dev": true,
       "requires": {
         "plugin-error": "^1.0.1",
-        "terser": "^3.14.1",
-        "through2": "^3.0.0",
+        "terser": "^4.0.0",
+        "through2": "^3.0.1",
         "vinyl-sourcemaps-apply": "^0.2.1"
       },
       "dependencies": {
         "through2": {
-          "version": "3.0.1",
-          "resolved": "https://registry.npmjs.org/through2/-/through2-3.0.1.tgz",
-          "integrity": "sha512-M96dvTalPT3YbYLaKaCuwu+j06D/8Jfib0o/PxbVt6Amhv3dUAtW6rTV1jPgJSBG83I/e04Y6xkVdVhSRhi0ww==",
+          "version": "3.0.2",
+          "resolved": "https://registry.npmjs.org/through2/-/through2-3.0.2.tgz",
+          "integrity": "sha512-enaDQ4MUyP2W6ZyT6EsMzqBPZaM/avg8iuo+l2d3QCs0J+6RaqkHV/2/lOwDTueBHeJ/2LG9lrLW3d5rWPucuQ==",
           "dev": true,
           "requires": {
+            "inherits": "^2.0.4",
             "readable-stream": "2 || 3"
           }
         }
@@ -6770,9 +6771,9 @@
       }
     },
     "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": "0.5.19",
+      "resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.5.19.tgz",
+      "integrity": "sha512-Wonm7zOCIJzBGQdB+thsPar0kYuCIzYvxZwlBa87yi/Mdjv7Tip2cyVbLj5o0cFPN4EVkuTwb3GDDyUx2DGnGw==",
       "dev": true,
       "requires": {
         "buffer-from": "^1.0.0",
@@ -7107,14 +7108,14 @@
       }
     },
     "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": "4.8.0",
+      "resolved": "https://registry.npmjs.org/terser/-/terser-4.8.0.tgz",
+      "integrity": "sha512-EAPipTNeWsb/3wLPeup1tVPaXfIaU68xMnVdPafIL1TV05OhASArYyIfFvnvJCNrR2NIOvDVNNTFRa+Re2MWyw==",
       "dev": true,
       "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 abb578c..0a2d2a5 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "gulp-header": "2.0.5",
     "gulp-rename": "1.4.0",
     "gulp-concat": "2.6.1",
-    "gulp-terser": "1.1.7",
+    "gulp-terser": "1.2.0",
     "gulp-optimize-js": "1.1.0",
     "gulp-sass": "4.0.2",
     "gulp-postcss": "8.0.0",