diff --git a/util/package-lock.json b/util/package-lock.json
index 6e214925..ed54f55f 100644
--- a/util/package-lock.json
+++ b/util/package-lock.json
@@ -97,18 +97,11 @@
       }
     },
     "async": {
-      "version": "2.5.0",
-      "resolved": "https://registry.npmjs.org/async/-/async-2.5.0.tgz",
-      "integrity": "sha512-e+lJAJeNWuPCNyxZKOBdaJGyLGHugXVQtrAwtuAe2vhxTYxFTKE73p8JuTmdH0qdQZtDvI4dhJwjZc5zsfIsYw==",
+      "version": "2.6.4",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+      "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
       "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="
-        }
+        "lodash": "^4.17.14"
       }
     },
     "bit-twiddle": {
diff --git a/util/package.json b/util/package.json
index b5e24416..e7fca5db 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": "^2.6.4",
     "child_process": "^1.0.2",
     "commander": "^2.14.1",
     "lodash": "^4.17.19",