diff --git a/rpc/example/node/package-lock.json b/rpc/example/node/package-lock.json
index 4bbe4b1..2f29fb5 100644
--- a/rpc/example/node/package-lock.json
+++ b/rpc/example/node/package-lock.json
@@ -270,9 +270,9 @@
       }
     },
     "google-protobuf": {
-      "version": "3.20.1",
-      "resolved": "https://registry.npmjs.org/google-protobuf/-/google-protobuf-3.20.1.tgz",
-      "integrity": "sha512-XMf1+O32FjYIV3CYu6Tuh5PNbfNEU5Xu22X+Xkdb/DUexFlCzhvv7d5Iirm4AOwn8lv4al1YvIhzGrg2j9Zfzw=="
+      "version": "3.21.0",
+      "resolved": "https://registry.npmjs.org/google-protobuf/-/google-protobuf-3.21.0.tgz",
+      "integrity": "sha512-byR7MBTK4tZ5PZEb+u5ZTzpt4SfrTxv5682MjPlHN16XeqgZE2/8HOIWeiXe8JKnT9OVbtBGhbq8mtvkK8cd5g=="
     },
     "grpc": {
       "version": "1.24.11",
diff --git a/rpc/example/node/package.json b/rpc/example/node/package.json
index f30818f..c60827d 100644
--- a/rpc/example/node/package.json
+++ b/rpc/example/node/package.json
@@ -4,7 +4,7 @@
   "dependencies": {
     "async": "^3.2.4",
     "global": "^4.4.0",
-    "google-protobuf": "^3.20.1",
+    "google-protobuf": "^3.21.0",
     "grpc": "^1.24.11",
     "lodash": "^4.17.21",
     "minimist": ">=1.2.6"