diff --git a/parlai/chat_service/core/server/package.json b/parlai/chat_service/core/server/package.json
index 0008be5430c..4674a693db6 100644
--- a/parlai/chat_service/core/server/package.json
+++ b/parlai/chat_service/core/server/package.json
@@ -14,7 +14,7 @@
     "node": ">= 7.6.0"
   },
   "dependencies": {
-    "async-lock": "1.0.0",
+    "async-lock": "1.4.1",
     "body-parser": "1.17.2",
     "express": "4.15.3",
     "nunjucks": "3.0.1",