diff --git a/package-lock.json b/package-lock.json
index 6c61fd0..94cb95e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -107,12 +107,9 @@
       }
     },
     "async": {
-      "version": "2.6.2",
-      "resolved": "https://registry.npmjs.org/async/-/async-2.6.2.tgz",
-      "integrity": "sha512-H1qVYh1MYhEEFLsP97cVKqCGo7KfCyTt6uEWqsTBr9SO84oK9Uwbyd/yCW+6rKJLHksBNUVWZDAjfS+Ccx0Bbg==",
-      "requires": {
-        "lodash": "^4.17.11"
-      }
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/async/-/async-3.2.2.tgz",
+      "integrity": "sha512-H0E+qZaDEfx/FY4t7iLRv1W2fFI6+pyCeTw1uN20AQPiwqwM6ojPxHxdLv4z8hi2DtnW9BOckSspLucW7pIE5g=="
     },
     "async-limiter": {
       "version": "1.0.0",
diff --git a/package.json b/package.json
index 93c640f..cf28ae5 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
   "license": "ISC",
   "dependencies": {
     "arraydiff": "^0.1.3",
-    "async": "^2.6.2",
+    "async": "^3.2.2",
     "browserify": "^16.2.3",
     "config": "^3.0.1",
     "cookie-parser": "^1.4.4",