diff --git a/package.json b/package.json
index fc5c3c86225ce0..6736a3dd04beb9 100644
--- a/package.json
+++ b/package.json
@@ -200,7 +200,7 @@
     "stacktrace-parser": "^0.1.3",
     "temp": "0.8.3",
     "throat": "^3.0.0",
-    "uglify-js": "^2.6.2",
+    "uglify-js": "2.7.5",
     "whatwg-fetch": "^1.0.0",
     "wordwrap": "^1.0.0",
     "worker-farm": "^1.3.1",
diff --git a/packager/package.json b/packager/package.json
index 2ea83333e54065..256282692c46b6 100644
--- a/packager/package.json
+++ b/packager/package.json
@@ -37,7 +37,7 @@
     "rimraf": "^2.5.4",
     "source-map": "^0.5.6",
     "throat": "^3.0.0",
-    "uglify-js": "^2.6.2",
+    "uglify-js": "2.7.5",
     "worker-farm": "^1.3.1",
     "write-file-atomic": "^1.2.0",
     "xpipe": "^1.0.5"