diff --git a/package.json b/package.json
index 204502a..aecd4b4 100644
--- a/package.json
+++ b/package.json
@@ -40,11 +40,11 @@
   "dependencies": {
     "gulp-util": "~2.2.12",
     "slash": "^0.1.3",
-    "through2": "~0.4.0"
+    "through2": "^0.5.1"
   },
   "devDependencies": {
     "gulp": "^3.6.2",
     "mocha": "^1.19.0",
-    "should": "^3.3.1"
+    "should": "^4.0.4"
   }
 }