diff --git a/package.json b/package.json
index 10056c4..19e35c8 100644
--- a/package.json
+++ b/package.json
@@ -45,7 +45,7 @@
   "devDependencies": {
     "browserify": "^13.0.0",
     "browserify-istanbul": "^1.0.0",
-    "concat-stream": "^1.5.1",
+    "concat-stream": "^1.5.2",
     "coveralls": "^2.11.8",
     "cross-spawn": "^2.1.5",
     "end-of-stream": "^1.1.0",