diff --git a/grpc-web/package-lock.json b/grpc-web/package-lock.json
index 40cfb31..1aa478f 100644
--- a/grpc-web/package-lock.json
+++ b/grpc-web/package-lock.json
@@ -3331,9 +3331,9 @@
       }
     },
     "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==",
       "dev": true
     },
     "lodash.camelcase": {
diff --git a/grpc-web/package.json b/grpc-web/package.json
index c494719..40292ad 100644
--- a/grpc-web/package.json
+++ b/grpc-web/package.json
@@ -15,7 +15,7 @@
     "google-protobuf": "^3.6.1",
     "grpc": "^1.15.0",
     "grpc-web": "^1.0.0",
-    "lodash": "^4.17.19",
+    "lodash": "^4.17.21",
     "webpack": "^4.16.5",
     "webpack-cli": "^3.1.0"
   },