diff --git a/package.json b/package.json
index 971b340..e17618d 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "async": "^2.6.0",
+    "async": "^3.2.2",
     "bitcoinjs-lib": "^3.3.1",
     "bs58": "^4.0.1",
     "coinselect": "^3.1.11",
diff --git a/yarn.lock b/yarn.lock
index dfeb76a..9b7220d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -133,12 +133,16 @@ async-each@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/async-each/-/async-each-1.0.1.tgz#19d386a1d9edc6e7c1c85d388aedbcc56d33602d"
 
-async@^2.1.2, async@^2.6.0:
+async@^2.1.2:
   version "2.6.0"
   resolved "https://registry.yarnpkg.com/async/-/async-2.6.0.tgz#61a29abb6fcc026fea77e56d1c6ec53a795951f4"
   dependencies:
     lodash "^4.14.0"
 
+async@^3.2.2:
+  version "3.2.2"
+  resolved "https://registry.yarnpkg.com/async/-/async-3.2.2.tgz#2eb7671034bb2194d45d30e31e24ec7e7f9670cd"
+
 asynckit@^0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/asynckit/-/asynckit-0.4.0.tgz#c79ed97f7f34cb8f2ba1bc9790bcc366474b4b79"