diff --git a/package.json b/package.json
index 1485c928c..cc5fba87f 100644
--- a/package.json
+++ b/package.json
@@ -2,12 +2,12 @@
   "name": "pdf.js",
   "version": "0.8.0",
   "devDependencies": {
-    "jsdoc": "~3.3.0",
-    "jshint": "2.4.x",
-    "wintersmith": "2.0.x",
-    "moment": "2.3.x",
-    "underscore": "1.4.x",
-    "typogr": "0.5.x",
+    "jsdoc": "3.3.0-alpha9",
+    "jshint": "~2.4.0",
+    "wintersmith": "~2.0.0",
+    "moment": "~2.3.0",
+    "underscore": "~1.4.0",
+    "typogr": "~0.5.0",
     "yargs": "~1.2.1"
   },
   "scripts": {