diff --git a/package-lock.json b/package-lock.json
index 05519ca..03d1f42 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -22,6 +22,11 @@
         "ws": "^1.0.1"
       },
       "dependencies": {
+        "async": {
+          "version": "1.5.2",
+          "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
+          "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo="
+        },
         "lodash": {
           "version": "3.10.1",
           "resolved": "https://registry.npmjs.org/lodash/-/lodash-3.10.1.tgz",
@@ -260,9 +265,19 @@
       "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU="
     },
     "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"
+      },
+      "dependencies": {
+        "lodash": {
+          "version": "4.17.21",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+          "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg=="
+        }
+      }
     },
     "async-each": {
       "version": "1.0.1",
@@ -505,6 +520,12 @@
         "wordwrap": "1.0.x"
       },
       "dependencies": {
+        "async": {
+          "version": "1.5.2",
+          "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
+          "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=",
+          "dev": true
+        },
         "escodegen": {
           "version": "1.8.1",
           "resolved": "https://registry.npmjs.org/escodegen/-/escodegen-1.8.1.tgz",
@@ -2268,6 +2289,14 @@
         "async": "^1.5.0",
         "loader-utils": "^0.2.3",
         "webpack-sources": "^0.1.0"
+      },
+      "dependencies": {
+        "async": {
+          "version": "1.5.2",
+          "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
+          "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=",
+          "dev": true
+        }
       }
     },
     "extsprintf": {
@@ -6006,6 +6035,12 @@
           "integrity": "sha1-ReN/s56No/JbruP/U2niu18iAXo=",
           "dev": true
         },
+        "async": {
+          "version": "1.5.2",
+          "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
+          "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=",
+          "dev": true
+        },
         "source-map": {
           "version": "0.5.7",
           "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz",
diff --git a/package.json b/package.json
index 1011727..ec1c816 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
     "@slack/client": "^2.3.0",
     "amqp-connection-manager": "^1.3.1",
     "amqplib": "^0.4.1",
-    "async": "^1.5.2",
+    "async": "^2.6.4",
     "compression": "^1.6.1",
     "dotenv": "^2.0.0",
     "express": "^4.13.4",