diff --git a/package-lock.json b/package-lock.json
index cbe07b28baa0..aef6dd3dde73 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -7298,9 +7298,9 @@
       }
     },
     "uglify-js": {
-      "version": "3.9.3",
-      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.9.3.tgz",
-      "integrity": "sha512-r5ImcL6QyzQGVimQoov3aL2ZScywrOgBXGndbWrdehKoSvGe/RmiE5Jpw/v+GvxODt6l2tpBXwA7n+qZVlHBMA==",
+      "version": "3.9.4",
+      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.9.4.tgz",
+      "integrity": "sha512-8RZBJq5smLOa7KslsNsVcSH+KOXf1uDU8yqLeNuVKwmT0T3FA0ZoXlinQfRad7SDcbZZRZE4ov+2v71EnxNyCA==",
       "dev": true,
       "requires": {
         "commander": "~2.20.3"
@@ -7713,4 +7713,4 @@
       }
     }
   }
-}
\ No newline at end of file
+}
diff --git a/package.json b/package.json
index ac6f000e4626..a18b3a7575b6 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
     "npm-run-all": "4.1.5",
     "svglint": "1.0.5",
     "svgo": "1.3.2",
-    "uglify-js": "3.9.3"
+    "uglify-js": "3.9.4"
   },
   "scripts": {
     "build": "node scripts/build-package.js",