diff --git a/package.json b/package.json
index 57bc88e..50ff89a 100644
--- a/package.json
+++ b/package.json
@@ -59,7 +59,7 @@
     "nearley": "^2.20.1",
     "rimraf": "^3.0.2",
     "tmp": "^0.2.1",
-    "uglify-js": "^3.13.5",
+    "uglify-js": "^3.15.4",
     "uuid": "^8.3.2"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 60c48d2..cd58ac4 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1181,9 +1181,10 @@ typescript@^4.2.4:
   version "4.2.4"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.2.4.tgz#8610b59747de028fda898a8aef0e103f156d0961"
 
-uglify-js@^3.13.5:
-  version "3.13.7"
-  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.13.7.tgz#25468a3b39b1c875df03f0937b2b7036a93f3fee"
+uglify-js@^3.15.4:
+  version "3.15.5"
+  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.15.5.tgz#2b10f9e0bfb3f5c15a8e8404393b6361eaeb33b3"
+  integrity sha512-hNM5q5GbBRB5xB+PMqVRcgYe4c8jbyZ1pzZhS6jbq54/4F2gFK869ZheiE5A8/t+W5jtTNpWef/5Q9zk639FNQ==
 
 universalify@^2.0.0:
   version "2.0.0"