diff --git a/package.json b/package.json
index e2baf5a..058a3c9 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
   },
   "homepage": "https://github.com/launchdarkly/node-server-sdk",
   "dependencies": {
-    "async": "^3.1.0",
+    "async": "^3.2.4",
     "launchdarkly-eventsource": "1.4.4",
     "lru-cache": "^6.0.0",
     "node-cache": "^5.1.0",