diff --git a/package-lock.json b/package-lock.json
index 441adb3..3d27ec7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -190,9 +190,9 @@
       "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 34142f2..1d16485 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
     "postversion": "git push && git push --tags"
   },
   "dependencies": {
-    "async": "^2.2.0",
+    "async": "^2.6.4",
     "body-parser": "^1.17.1",
     "cors": "^2.8.1",
     "debug": "^2.2.0",