diff --git a/package.json b/package.json
index f03507c8..92374914 100644
--- a/package.json
+++ b/package.json
@@ -68,7 +68,7 @@
     "pretty-bytes-cli": "2.0.0",
     "semver": "6.1.1",
     "sinon": "7.3.2",
-    "uglify-js": "3.5.13",
+    "uglify-js": "3.6.0",
     "webpack": "3.12.0",
     "webpack-cli": "3.3.2"
   },
diff --git a/yarn.lock b/yarn.lock
index b3982fdb..de59fb5b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -8797,10 +8797,10 @@ type-detect@4.0.8:
   resolved "https://registry.yarnpkg.com/type-detect/-/type-detect-4.0.8.tgz#7646fb5f18871cfbb7749e69bd39a6388eb7450c"
   integrity sha512-0fr/mIH1dlO+x7TlcMy+bIDqKPsw/70tVyeHW787goQjhmqaZe10uwLujubK9q9Lg6Fiho1KUKDYz0Z7k7g5/g==
 
-uglify-js@3.5.13:
-  version "3.5.13"
-  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.5.13.tgz#d2d8857b598d77f8764ae3bfcf90bb1df134d2bd"
-  integrity sha512-Lho+IJlquX6sdJgyKSJx/M9y4XbDd3ekPjD8S6HYmT5yVSwDtlSuca2w5hV4g2dIsp0Y/4orbfWxKexodmFv7w==
+uglify-js@3.6.0:
+  version "3.6.0"
+  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.6.0.tgz#704681345c53a8b2079fb6cec294b05ead242ff5"
+  integrity sha512-W+jrUHJr3DXKhrsS7NUVxn3zqMOFn0hL/Ei6v0anCIMoKC93TjcflTagwIHLW7SfMFfiQuktQyFVCFHGUE0+yg==
   dependencies:
     commander "~2.20.0"
     source-map "~0.6.1"