diff --git a/package.json b/package.json
index f999181..0e73e55 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
     "gulp-postcss": "8.0.0",
     "gulp-sass": "^4.0.2",
     "gulp-sourcemaps": "2.6.5",
-    "gulp-terser": "1.4.0",
+    "gulp-terser": "2.0.1",
     "gulp-uglify": "^3.0.2",
     "gulp4-run-sequence": "^1.0.1",
     "pngout-bin": "^5.0.0"
diff --git a/yarn.lock b/yarn.lock
index 5b4a638..0eaf56e 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2717,14 +2717,13 @@ gulp-sourcemaps@2.6.5:
     strip-bom-string "1.X"
     through2 "2.X"
 
-gulp-terser@1.4.0:
-  version "1.4.0"
-  resolved "https://registry.yarnpkg.com/gulp-terser/-/gulp-terser-1.4.0.tgz#0ac4dfdbed4ab46906007c5b358810c1642b9764"
-  integrity sha512-7df9leJna3WOmj76tYHxjpn7BSU+vmKVjVSd6bz3uLEyrzCfZI97KPhRcIabrSNzs0UY/UXTt+JwkxPw3sF85w==
+gulp-terser@2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/gulp-terser/-/gulp-terser-2.0.1.tgz#5f8f4fc54588b79519243809cc8eef4936286d0d"
+  integrity sha512-XCrnCXP8ovNpgLK9McJIXlgm0j3W2TsiWu7K9y3m+Sn5XZgUzi6U8MPHtS3NdLMic9poCj695N0ARJ2B6atypw==
   dependencies:
-    is-promise "^4.0.0"
     plugin-error "^1.0.1"
-    terser ">=4"
+    terser "5.4.0"
     through2 "^4.0.2"
     vinyl-sourcemaps-apply "^0.2.1"
 
@@ -3325,11 +3324,6 @@ is-promise@^2.1:
   resolved "https://registry.yarnpkg.com/is-promise/-/is-promise-2.2.2.tgz#39ab959ccbf9a774cf079f7b40c7a26f763135f1"
   integrity sha512-+lP4/6lKUBfQjZ2pdxThZvLUAafmZb8OAxFb8XXtiQmS35INgr85hdOGoEs124ez1FCnZJt6jau/T+alh58QFQ==
 
-is-promise@^4.0.0:
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/is-promise/-/is-promise-4.0.0.tgz#42ff9f84206c1991d26debf520dd5c01042dd2f3"
-  integrity sha512-hvpoI6korhJMnej285dSg6nu1+e6uxs7zG3BYAm5byqDsgJNWwxzM6z6iZiAgQR4TJ30JmBTOwqZUw3WlyH3AQ==
-
 is-redirect@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/is-redirect/-/is-redirect-1.0.0.tgz#1d03dded53bd8db0f30c26e4f95d36fc7c87dc24"
@@ -6048,7 +6042,7 @@ source-map-resolve@^0.5.0, source-map-resolve@^0.5.2:
     source-map-url "^0.4.0"
     urix "^0.1.0"
 
-source-map-support@~0.5.12:
+source-map-support@~0.5.19:
   version "0.5.19"
   resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.19.tgz#a98b62f86dcaf4f67399648c085291ab9e8fed61"
   integrity sha512-Wonm7zOCIJzBGQdB+thsPar0kYuCIzYvxZwlBa87yi/Mdjv7Tip2cyVbLj5o0cFPN4EVkuTwb3GDDyUx2DGnGw==
@@ -6078,6 +6072,11 @@ source-map@^0.6.0, source-map@^0.6.1, source-map@~0.6.0, source-map@~0.6.1:
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.6.1.tgz#74722af32e9614e9c287a8d0bbde48b5e2f1a263"
   integrity sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==
 
+source-map@~0.7.2:
+  version "0.7.3"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.7.3.tgz#5302f8169031735226544092e64981f751750383"
+  integrity sha512-CkCj6giN3S+n9qrYiBTX5gystlENnRW5jZeNLHpe6aue+SrHcG5VYwujhW9s4dY31mEGsxBDrHR6oI69fTXsaQ==
+
 sparkles@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/sparkles/-/sparkles-1.0.1.tgz#008db65edce6c50eec0c5e228e1945061dd0437c"
@@ -6477,14 +6476,14 @@ term-size@^1.2.0:
   dependencies:
     execa "^0.7.0"
 
-terser@>=4:
-  version "4.8.0"
-  resolved "https://registry.yarnpkg.com/terser/-/terser-4.8.0.tgz#63056343d7c70bb29f3af665865a46fe03a0df17"
-  integrity sha512-EAPipTNeWsb/3wLPeup1tVPaXfIaU68xMnVdPafIL1TV05OhASArYyIfFvnvJCNrR2NIOvDVNNTFRa+Re2MWyw==
+terser@5.4.0:
+  version "5.4.0"
+  resolved "https://registry.yarnpkg.com/terser/-/terser-5.4.0.tgz#9815c0839072d5c894e22c6fc508fbe9f5e7d7e8"
+  integrity sha512-3dZunFLbCJis9TAF2VnX+VrQLctRUmt1p3W2kCsJuZE4ZgWqh//+1MZ62EanewrqKoUf4zIaDGZAvml4UDc0OQ==
   dependencies:
     commander "^2.20.0"
-    source-map "~0.6.1"
-    source-map-support "~0.5.12"
+    source-map "~0.7.2"
+    source-map-support "~0.5.19"
 
 test@^0.6.0:
   version "0.6.0"