diff --git a/package-lock.json b/package-lock.json
index 5c3d7b6..0b44283 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -170,18 +170,11 @@
       "integrity": "sha1-E8pRXYYgbaC6xm6DTdOX2HWBCUw="
     },
     "async": {
-      "version": "2.5.0",
-      "resolved": "https://registry.npmjs.org/async/-/async-2.5.0.tgz",
-      "integrity": "sha512-e+lJAJeNWuPCNyxZKOBdaJGyLGHugXVQtrAwtuAe2vhxTYxFTKE73p8JuTmdH0qdQZtDvI4dhJwjZc5zsfIsYw==",
+      "version": "2.6.4",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+      "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
       "requires": {
-        "lodash": "4.17.4"
-      },
-      "dependencies": {
-        "lodash": {
-          "version": "4.17.4",
-          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
-          "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4="
-        }
+        "lodash": "^4.17.14"
       }
     },
     "asynckit": {
diff --git a/package.json b/package.json
index 6788142..900a668 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
   },
   "dependencies": {
     "JSONStream": "^1.3.1",
-    "async": "^2.5.0",
+    "async": "^2.6.4",
     "babel-polyfill": "^6.23.0",
     "babel-preset-es2015": "^6.24.1",
     "config": "^1.26.1",