diff --git a/package-lock.json b/package-lock.json
index 082870e..2803738 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -417,9 +417,9 @@
       "dev": true
     },
     "async": {
-      "version": "2.6.3",
-      "resolved": "https://registry.npmjs.org/async/-/async-2.6.3.tgz",
-      "integrity": "sha512-zflvls11DCy+dQWzTW2dzuilv8Z5X/pjfmZOWba6TNIVDm+2UDaJmXSOXlasHKfNBs8oo3M0aT50fDEWfKZjXg==",
+      "version": "2.6.4",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+      "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
       "requires": {
         "lodash": "^4.17.14"
       }
diff --git a/package.json b/package.json
index f23114a..e1ee3b5 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "async": "^2.6.1",
+    "async": "^2.6.4",
     "cluster": "^0.7.7",
     "cookie-parser": "~1.4.3",
     "debug": "~2.6.9",