diff --git a/package-lock.json b/package-lock.json
index 827865a..7d495cb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -108,9 +108,12 @@
       }
     },
     "async": {
-      "version": "1.5.2",
-      "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
-      "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo="
+      "version": "2.6.4",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+      "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
+      "requires": {
+        "lodash": "^4.17.14"
+      }
     },
     "bytebuffer": {
       "version": "5.0.1",
diff --git a/package.json b/package.json
index 3af6a11..34cefed 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "version": "0.1.0",
   "dependencies": {
     "@grpc/proto-loader": "^0.1.0",
-    "async": "^1.5.2",
+    "async": "^2.6.4",
     "google-protobuf": "^3.0.0",
     "grpc": "^1.11.0",
     "lodash": "^4.6.1",