diff --git a/package-lock.json b/package-lock.json
index bcb28ec..5eb50fa 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -79,9 +79,9 @@
       "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU="
     },
     "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 94f969c..9d5b31a 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
   },
   "license": "MIT",
   "dependencies": {
-    "async": "^2.6.1",
+    "async": "^2.6.4",
     "express": "^4.16.3",
     "http": "0.0.0",
     "node-schedule": "^1.3.0",