diff --git a/package.json b/package.json
index 9fb6828..dba2a89 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
     "variable-replacer": "1.5.1",
     "coffee-script": "1.12.5",
     "coffeescript-concat": "1.0.14",
-    "uglifyjs": "2.4.10",
+    "uglify-js": "3.5.9",
     "chai": "3.5.0",
     "chai-jq": "0.0.9",
     "mocha": "3.2.0",
diff --git a/requirements.txt b/requirements.txt
index 333b93c..5ee5317 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
 Flask
-Assetgen<0.3.9
+Assetgen
 Config
--
libgit2 0.21.2