diff --git a/package-lock.json b/package-lock.json
index d467f4a..d8efad3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -28,9 +28,12 @@
       "integrity": "sha1-104bh+ev/A24qttwIfP+SBAasjQ="
     },
     "async": {
-      "version": "1.5.2",
-      "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
-      "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo="
+      "version": "2.6.4",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+      "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
+      "requires": {
+        "lodash": "^4.17.14"
+      }
     },
     "aws-sdk": {
       "version": "2.979.0",
@@ -186,6 +189,11 @@
         "request": "2.72.0"
       },
       "dependencies": {
+        "async": {
+          "version": "1.5.2",
+          "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
+          "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo="
+        },
         "object-path": {
           "version": "0.9.2",
           "resolved": "https://registry.npmjs.org/object-path/-/object-path-0.9.2.tgz",
diff --git a/package.json b/package.json
index 0b5f509..bb41d1f 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
     "node": "10.x"
   },
   "dependencies": {
-    "async": "^1.5.2",
+    "async": "^2.6.4",
     "aws-sdk": "^2.978.0",
     "entulib": "^1.0.0",
     "object-path": "^0.11.5"