diff --git a/package-lock.json b/package-lock.json
index 634604e..c1dbddf 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "probo-reaper",
-  "version": "4.3.0",
+  "version": "5.0.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -571,9 +571,12 @@
       "dev": true
     },
     "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"
+      }
     },
     "asynckit": {
       "version": "0.4.0",
diff --git a/package.json b/package.json
index e7a744e..4b4f173 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
   "homepage": "https://github.com/ProboCI/probo-reaper#readme",
   "dependencies": {
     "JSONStream": "^1.0.6",
-    "async": "^1.5.2",
+    "async": "^2.6.4",
     "bluebird": "^3.0.5",
     "bunyan": "^1.8.15",
     "bytes": "^2.2.0",