diff --git a/package-lock.json b/package-lock.json
index 38af094..f72c901 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -29,9 +29,12 @@
       "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"
+      }
     },
     "asynckit": {
       "version": "0.4.0",
@@ -204,6 +207,11 @@
         "verror": "1.10.0"
       }
     },
+    "lodash": {
+      "version": "4.17.21",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg=="
+    },
     "mime-db": {
       "version": "1.40.0",
       "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.40.0.tgz",
diff --git a/package.json b/package.json
index d39a08f..71cb025 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
     "json"
   ],
   "dependencies": {
-    "async": "0.2.x",
+    "async": "2.6.x",
     "spas-http": "0.1.x"
   },
   "main": "./api.js",