diff --git a/package.json b/package.json
index 1c5e227e..46f51a88 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "url": "git://github.com/jashkenas/coffee-script.git"
   },
   "devDependencies": {
-    "uglify-js":  "1.0.6",
-    "jison":      ">0.2.11"
+    "uglify-js":  ">=1.0.0",
+    "jison":      ">=0.2.0"
   }
 }