diff --git a/package.json b/package.json
index aca5f91..c3e5523 100644
--- a/package.json
+++ b/package.json
@@ -41,9 +41,9 @@
     "url":  "http://github.com/dmajda/pegjs.git"
   },
   "devDependencies": {
-    "jasmine-node": ">= 1.0.25",
-    "uglify-js":    ">= 1.2.4",
-    "jshint":       ">= 0.5.5"
+    "jasmine-node": "= 1.0.26",
+    "uglify-js":    "= 1.3.4",
+    "jshint":       "= 0.9.1"
   },
   "engines":         {
     "node": ">= 0.6.6"