diff --git a/package-lock.json b/package-lock.json
index b7dd235..f606461 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -29,11 +29,11 @@
       "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU="
     },
     "async": {
-      "version": "2.1.2",
-      "resolved": "https://registry.npmjs.org/async/-/async-2.1.2.tgz",
-      "integrity": "sha1-YSpKtF70KnDN6Aa62G7m2wR+g4U=",
+      "version": "2.6.4",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+      "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
       "requires": {
-        "lodash": "^4.14.0"
+        "lodash": "^4.17.14"
       }
     },
     "asynckit": {
diff --git a/package.json b/package.json
index 8794632..3473b10 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,7 @@
     "npm": "2.15.5"
   },
   "dependencies": {
-    "async": "2.1.2",
+    "async": "2.6.4",
     "config": "1.21.0",
     "debug": "^4.3.2",
     "node-cache": "4.1.0",