diff --git a/package-lock.json b/package-lock.json
index b495c02..076cf8f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -134,9 +134,19 @@
       "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU="
     },
     "async": {
-      "version": "0.2.10",
-      "resolved": "https://registry.npmjs.org/async/-/async-0.2.10.tgz",
-      "integrity": "sha1-trvgsGdLnXGXCMo43owjfLUmw9E="
+      "version": "2.6.4",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+      "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
+      "requires": {
+        "lodash": "^4.17.14"
+      },
+      "dependencies": {
+        "lodash": {
+          "version": "4.17.21",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+          "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg=="
+        }
+      }
     },
     "asynckit": {
       "version": "0.4.0",
diff --git a/package.json b/package.json
index 09982fa..aa7c2ae 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
     "npm": "2.0.0"
   },
   "dependencies": {
-    "async": "^0.2.10",
+    "async": "^2.6.4",
   "body-parser": "^1.1.1",
     "bytes": "^1.0.0",
     "compression": "^1.0.2",