diff --git a/util/package-lock.json b/util/package-lock.json
index 6e214925..e5de3201 100644
--- a/util/package-lock.json
+++ b/util/package-lock.json
@@ -156,9 +156,9 @@
       "integrity": "sha1-sX0I0ya0Qj5Wjv9xn5GwscvfafE="
     },
     "lodash": {
-      "version": "4.17.19",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.19.tgz",
-      "integrity": "sha512-JNvd8XER9GQX0v2qJgsaN/mzFCNA5BRe/j8JN9d+tWyGLSodKQHKFicdwNYzWwI3wjRnaKPsGj1XkBjx/F96DQ=="
+      "version": "4.17.21",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg=="
     },
     "monotone-convex-hull-2d": {
       "version": "1.0.1",
diff --git a/util/package.json b/util/package.json
index b5e24416..c747df3b 100644
--- a/util/package.json
+++ b/util/package.json
@@ -16,7 +16,7 @@
     "async": "^2.5.0",
     "child_process": "^1.0.2",
     "commander": "^2.14.1",
-    "lodash": "^4.17.19",
+    "lodash": "^4.17.21",
     "path": "^0.12.7"
   }
 }