diff --git a/package.json b/package.json
index 28c9585..262a093 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "dependencies": {
     "agent-base": "^2.0.1",
-    "async": "^2.1.5",
+    "async": "^3.2.2",
     "consolidate": "^0.14.5",
     "mailgun-js": "^0.8.2",
     "moment": "^2.17.1",
diff --git a/yarn.lock b/yarn.lock
index f10950b..cdcabb7 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -70,7 +70,11 @@ ast-types@0.9.6, ast-types@0.x.x:
   version "0.9.6"
   resolved "https://registry.yarnpkg.com/ast-types/-/ast-types-0.9.6.tgz#102c9e9e9005d3e7e3829bf0c4fa24ee862ee9b9"
 
-async@^2.1.5, async@~2.1.2:
+async@^3.2.2:
+  version "3.2.2"
+  resolved "https://registry.yarnpkg.com/async/-/async-3.2.2.tgz#2eb7671034bb2194d45d30e31e24ec7e7f9670cd"
+
+async@~2.1.2:
   version "2.1.5"
   resolved "https://registry.yarnpkg.com/async/-/async-2.1.5.tgz#e587c68580994ac67fc56ff86d3ac56bdbe810bc"
   dependencies: