diff --git a/package.json b/package.json
index acadefe..a2004ac 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
     "replacestream": "^4.0.0"
   },
   "devDependencies": {
-    "concat-stream": "^1.5.0",
+    "concat-stream": "^1.5.2",
     "mocha": "^2.1.0",
     "should": "^7.0.1",
     "vinyl": "^0.5.0"