diff --git a/demos/grpc-browser/package-lock.json b/demos/grpc-browser/package-lock.json
index 5e30bf3..17d0dd0 100644
--- a/demos/grpc-browser/package-lock.json
+++ b/demos/grpc-browser/package-lock.json
@@ -1118,9 +1118,9 @@
       "dev": true
     },
     "grpc-web": {
-      "version": "1.2.1",
-      "resolved": "https://registry.npmjs.org/grpc-web/-/grpc-web-1.2.1.tgz",
-      "integrity": "sha512-ibBaJPzfMVuLPgaST9w0kZl60s+SnkPBQp6QKdpEr85tpc1gXW2QDqSne9xiyiym0logDfdUSm4aX5h9YBA2mw=="
+      "version": "1.4.2",
+      "resolved": "https://registry.npmjs.org/grpc-web/-/grpc-web-1.4.2.tgz",
+      "integrity": "sha512-gUxWq42l5ldaRplcKb4Pw5O4XBONWZgz3vxIIXnfIeJj8Jc3wYiq2O4c9xzx/NGbbPEej4rhI62C9eTENwLGNw=="
     },
     "handle-thing": {
       "version": "2.0.1",
diff --git a/demos/grpc-browser/package.json b/demos/grpc-browser/package.json
index 25512d1..226130a 100644
--- a/demos/grpc-browser/package.json
+++ b/demos/grpc-browser/package.json
@@ -11,7 +11,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "grpc-web": "^1.2.1"
+    "grpc-web": "^1.4.2"
   },
   "devDependencies": {
     "google-protobuf": "^3.17.3",