diff --git a/api/pb/javascript/package-lock.json b/api/pb/javascript/package-lock.json
index 8d550054..8e1c85d7 100644
--- a/api/pb/javascript/package-lock.json
+++ b/api/pb/javascript/package-lock.json
@@ -9,7 +9,7 @@
       "version": "0.0.0",
       "license": "MIT",
       "dependencies": {
-        "@improbable-eng/grpc-web": "^0.14.1",
+        "@improbable-eng/grpc-web": "^0.15.0",
         "@types/google-protobuf": "^3.15.5",
         "google-protobuf": "^3.19.4"
       },
@@ -18,9 +18,9 @@
       }
     },
     "node_modules/@improbable-eng/grpc-web": {
-      "version": "0.14.1",
-      "resolved": "https://registry.npmjs.org/@improbable-eng/grpc-web/-/grpc-web-0.14.1.tgz",
-      "integrity": "sha512-XaIYuunepPxoiGVLLHmlnVminUGzBTnXr8Wv7khzmLWbNw4TCwJKX09GSMJlKhu/TRk6gms0ySFxewaETSBqgw==",
+      "version": "0.15.0",
+      "resolved": "https://registry.npmjs.org/@improbable-eng/grpc-web/-/grpc-web-0.15.0.tgz",
+      "integrity": "sha512-ERft9/0/8CmYalqOVnJnpdDry28q+j+nAlFFARdjyxXDJ+Mhgv9+F600QC8BR9ygOfrXRlAk6CvST2j+JCpQPg==",
       "dependencies": {
         "browser-headers": "^0.4.1"
       },
@@ -58,9 +58,9 @@
   },
   "dependencies": {
     "@improbable-eng/grpc-web": {
-      "version": "0.14.1",
-      "resolved": "https://registry.npmjs.org/@improbable-eng/grpc-web/-/grpc-web-0.14.1.tgz",
-      "integrity": "sha512-XaIYuunepPxoiGVLLHmlnVminUGzBTnXr8Wv7khzmLWbNw4TCwJKX09GSMJlKhu/TRk6gms0ySFxewaETSBqgw==",
+      "version": "0.15.0",
+      "resolved": "https://registry.npmjs.org/@improbable-eng/grpc-web/-/grpc-web-0.15.0.tgz",
+      "integrity": "sha512-ERft9/0/8CmYalqOVnJnpdDry28q+j+nAlFFARdjyxXDJ+Mhgv9+F600QC8BR9ygOfrXRlAk6CvST2j+JCpQPg==",
       "requires": {
         "browser-headers": "^0.4.1"
       }
diff --git a/api/pb/javascript/package.json b/api/pb/javascript/package.json
index fb733a6a..6c983be1 100644
--- a/api/pb/javascript/package.json
+++ b/api/pb/javascript/package.json
@@ -15,7 +15,7 @@
     "threads_pb_service.d.ts"
   ],
   "dependencies": {
-    "@improbable-eng/grpc-web": "^0.14.1",
+    "@improbable-eng/grpc-web": "^0.15.0",
     "@types/google-protobuf": "^3.15.5",
     "google-protobuf": "^3.19.4"
   },