diff --git a/package-lock.json b/package-lock.json
index 487bc14..356beeb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -271,9 +271,9 @@
       "dev": true
     },
     "async": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/async/-/async-3.1.0.tgz",
-      "integrity": "sha512-4vx/aaY6j/j3Lw3fbCHNWP0pPaTCew3F6F3hYyl/tHs/ndmV1q7NW9T5yuJ2XAGwdQrP+6Wu20x06U4APo/iQQ=="
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/async/-/async-3.2.2.tgz",
+      "integrity": "sha512-H0E+qZaDEfx/FY4t7iLRv1W2fFI6+pyCeTw1uN20AQPiwqwM6ojPxHxdLv4z8hi2DtnW9BOckSspLucW7pIE5g=="
     },
     "big-integer": {
       "version": "1.6.25",
diff --git a/package.json b/package.json
index 645a0a4..129bf0f 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
     "tap-spec": "^5.0.0"
   },
   "dependencies": {
-    "async": "^3.1.0",
+    "async": "^3.2.2",
     "big-integer": "^1.6.25",
     "debug": "^3.1.0",
     "lodash": "^4.17.15",