diff --git a/package-lock.json b/package-lock.json
index ab4c80b..0669c66 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -948,9 +948,19 @@
       "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-retry": {
       "version": "1.3.1",
@@ -4679,6 +4689,11 @@
         "minimist": "^1.1.0"
       },
       "dependencies": {
+        "async": {
+          "version": "1.5.2",
+          "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
+          "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo="
+        },
         "minimist": {
           "version": "1.2.0",
           "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
@@ -5124,6 +5139,11 @@
         "mkdirp": "0.5.x"
       },
       "dependencies": {
+        "async": {
+          "version": "1.5.2",
+          "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
+          "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo="
+        },
         "debug": {
           "version": "2.6.9",
           "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
@@ -7001,6 +7021,11 @@
         "update-notifier": "^2.5.0"
       },
       "dependencies": {
+        "async": {
+          "version": "1.5.2",
+          "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
+          "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo="
+        },
         "fs-extra": {
           "version": "0.30.0",
           "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-0.30.0.tgz",
diff --git a/package.json b/package.json
index a0a7845..e129a84 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
   },
   "dependencies": {
     "@gribnoysup/wunderbar": "^2.1.0",
-    "async": "^1.5.2",
+    "async": "^2.6.4",
     "bower": "^1.8.8",
     "firebase": "^5.9.0",
     "firebase-tools": "^6.5.0",