diff --git a/util/package-lock.json b/util/package-lock.json
index 6e214925..c1145909 100644
--- a/util/package-lock.json
+++ b/util/package-lock.json
@@ -97,19 +97,9 @@
       }
     },
     "async": {
-      "version": "2.5.0",
-      "resolved": "https://registry.npmjs.org/async/-/async-2.5.0.tgz",
-      "integrity": "sha512-e+lJAJeNWuPCNyxZKOBdaJGyLGHugXVQtrAwtuAe2vhxTYxFTKE73p8JuTmdH0qdQZtDvI4dhJwjZc5zsfIsYw==",
-      "requires": {
-        "lodash": "4.17.4"
-      },
-      "dependencies": {
-        "lodash": {
-          "version": "4.17.4",
-          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
-          "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4="
-        }
-      }
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/async/-/async-3.2.2.tgz",
+      "integrity": "sha512-H0E+qZaDEfx/FY4t7iLRv1W2fFI6+pyCeTw1uN20AQPiwqwM6ojPxHxdLv4z8hi2DtnW9BOckSspLucW7pIE5g=="
     },
     "bit-twiddle": {
       "version": "1.0.2",
diff --git a/util/package.json b/util/package.json
index b5e24416..e9b57290 100644
--- a/util/package.json
+++ b/util/package.json
@@ -13,7 +13,7 @@
     "@turf/clusters-dbscan": "^4.7.3",
     "@turf/convex": "^4.7.3",
     "@turf/distance": "^5.0.0",
-    "async": "^2.5.0",
+    "async": "^3.2.2",
     "child_process": "^1.0.2",
     "commander": "^2.14.1",
     "lodash": "^4.17.19",