diff --git a/package.json b/package.json
index 4cc5319..c781b7f 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
   ],
   "license": "BSD-2-Clause",
   "dependencies": {
-    "async": ">=2.1.5",
+    "async": ">=2.3.0",
     "sqlite3": ">=2.1",
     "pkginfo": ">=0.2.3",
     "mkdirp": ">=0.3.1",