diff --git a/package.json b/package.json
index 39a8a8103..bd85f2ee1 100644
--- a/package.json
+++ b/package.json
@@ -102,7 +102,7 @@
   },
   "devDependencies": {
     "@bufbuild/buf": "1.55.1",
-    "@bufbuild/protoc-gen-es": "2.6.1",
+    "@bufbuild/protoc-gen-es": "2.9.0",
     "@playwright/test": "1.54.1",
     "@squonk/eslint-config": "3.0.0",
     "dotenv": "16.6.1",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 8226a1e9b..416b9a9c6 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -213,8 +213,8 @@ importers:
         specifier: 1.55.1
         version: 1.55.1
       '@bufbuild/protoc-gen-es':
-        specifier: 2.6.1
-        version: 2.6.1(@bufbuild/protobuf@2.6.1)
+        specifier: 2.9.0
+        version: 2.9.0(@bufbuild/protobuf@2.6.1)
       '@playwright/test':
         specifier: 1.54.1
         version: 1.54.1
@@ -369,18 +369,21 @@ packages:
   '@bufbuild/protobuf@2.6.1':
     resolution: {integrity: sha512-DaG6XlyKpz08bmHY5SGX2gfIllaqtDJ/KwVoxsmP22COOLYwDBe7yD3DZGwXem/Xq7QOc9cuR7R3MpAv5CFfDw==}
 
-  '@bufbuild/protoc-gen-es@2.6.1':
-    resolution: {integrity: sha512-LIxXANgj27QHGZrCekfB/v9zEWzuxDBQyE+91BjY7KbvrELcNQyN0kFGRLy/Eu2bLC4+n1hlCL9TIjN49wV2Fw==}
-    engines: {node: '>=14'}
+  '@bufbuild/protobuf@2.9.0':
+    resolution: {integrity: sha512-rnJenoStJ8nvmt9Gzye8nkYd6V22xUAnu4086ER7h1zJ508vStko4pMvDeQ446ilDTFpV5wnoc5YS7XvMwwMqA==}
+
+  '@bufbuild/protoc-gen-es@2.9.0':
+    resolution: {integrity: sha512-g54rrHLKc7fnxN25ikynstRxR19M5G5l/hyqut2JoypJ9iU9QgUE63zEm8PNvVfBd4r5PEzWPfbWy5MNOeuMKQ==}
+    engines: {node: '>=20'}
     hasBin: true
     peerDependencies:
-      '@bufbuild/protobuf': 2.6.1
+      '@bufbuild/protobuf': 2.9.0
     peerDependenciesMeta:
       '@bufbuild/protobuf':
         optional: true
 
-  '@bufbuild/protoplugin@2.6.1':
-    resolution: {integrity: sha512-pheV/ysWCMSCyRnR7oE2qjEM2QEFFkwYOtHaS86VbxbGfSohcw64rorU7ldCVFZHlFjIsSAqd/yIuTy4J3Itlg==}
+  '@bufbuild/protoplugin@2.9.0':
+    resolution: {integrity: sha512-uoiwNVYoTq+AyqaV1L6pBazGx5fXOO89L0NSR9/7hEfo0Y8n9T1jsKGu4mkitLmP3z+8gJREaule1mMuKBPyYw==}
 
   '@choojs/findup@0.2.1':
     resolution: {integrity: sha512-YstAqNb0MCN8PjdLCDfRsBcGVRN41f3vgLvaI0IrIcBp4AqILRSS0DeWNGkicC+f/zRIPJLc+9RURVSepwvfBw==}
@@ -6232,17 +6235,19 @@ snapshots:
 
   '@bufbuild/protobuf@2.6.1': {}
 
-  '@bufbuild/protoc-gen-es@2.6.1(@bufbuild/protobuf@2.6.1)':
+  '@bufbuild/protobuf@2.9.0': {}
+
+  '@bufbuild/protoc-gen-es@2.9.0(@bufbuild/protobuf@2.6.1)':
     dependencies:
-      '@bufbuild/protoplugin': 2.6.1
+      '@bufbuild/protoplugin': 2.9.0
     optionalDependencies:
       '@bufbuild/protobuf': 2.6.1
     transitivePeerDependencies:
       - supports-color
 
-  '@bufbuild/protoplugin@2.6.1':
+  '@bufbuild/protoplugin@2.9.0':
     dependencies:
-      '@bufbuild/protobuf': 2.6.1
+      '@bufbuild/protobuf': 2.9.0
       '@typescript/vfs': 1.6.1(typescript@5.4.5)
       typescript: 5.4.5
     transitivePeerDependencies: