diff --git a/package.json b/package.json
index 857e17afe..2829781d5 100644
--- a/package.json
+++ b/package.json
@@ -100,7 +100,7 @@
   },
   "devDependencies": {
     "@bufbuild/buf": "1.54.0",
-    "@bufbuild/protoc-gen-es": "2.2.5",
+    "@bufbuild/protoc-gen-es": "2.4.0",
     "@playwright/test": "1.52.0",
     "@squonk/eslint-config": "3.0.0",
     "dotenv": "16.4.7",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index d98e6c943..bd52cea76 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -207,8 +207,8 @@ importers:
         specifier: 1.54.0
         version: 1.54.0
       '@bufbuild/protoc-gen-es':
-        specifier: 2.2.5
-        version: 2.2.5(@bufbuild/protobuf@2.4.0)
+        specifier: 2.4.0
+        version: 2.4.0(@bufbuild/protobuf@2.4.0)
       '@playwright/test':
         specifier: 1.52.0
         version: 1.52.0
@@ -360,24 +360,21 @@ packages:
     engines: {node: '>=12'}
     hasBin: true
 
-  '@bufbuild/protobuf@2.2.5':
-    resolution: {integrity: sha512-/g5EzJifw5GF8aren8wZ/G5oMuPoGeS6MQD3ca8ddcvdXR5UELUfdTZITCGNhNXynY/AYl3Z4plmxdj/tRl/hQ==}
-
   '@bufbuild/protobuf@2.4.0':
     resolution: {integrity: sha512-RN9M76x7N11QRihKovEglEjjVCQEA9PRBVnDgk9xw8JHLrcUrp4FpAVSPSH91cNbcTft3u2vpLN4GMbiKY9PJw==}
 
-  '@bufbuild/protoc-gen-es@2.2.5':
-    resolution: {integrity: sha512-81dI1PLMQXUkvCUH1fKJEZsx+G69LvU/0BOFeqxotFpCFEC/jTu1Ka1ViIEGT5U1r51udRs20kHZTlkR9zwfAA==}
+  '@bufbuild/protoc-gen-es@2.4.0':
+    resolution: {integrity: sha512-f5nm7HxXwVJKcAqpUTevKeLJOjy9WWqAuYORx3AnlB7w+XHPo/qrjQgMh4a9Dy1/aixYvBw2CnNK5d0DZ6CRgw==}
     engines: {node: '>=14'}
     hasBin: true
     peerDependencies:
-      '@bufbuild/protobuf': 2.2.5
+      '@bufbuild/protobuf': 2.4.0
     peerDependenciesMeta:
       '@bufbuild/protobuf':
         optional: true
 
-  '@bufbuild/protoplugin@2.2.5':
-    resolution: {integrity: sha512-Z68KTDLiidUYoJ8kjs6YfhK8r58W93pOFIfGqlnK1RZQTQRtbH6WRWjSqtuiy4WjJpJZ5qE0lKtFGR+bHU8Vaw==}
+  '@bufbuild/protoplugin@2.4.0':
+    resolution: {integrity: sha512-Y7Wxis00uKM58UOM21aVECsMoPHzKvHJBH05bpmAhlOWXhVjtFDStOwB2gIiUB1rumbwOmjHTDe/bGP5M4HxmA==}
 
   '@choojs/findup@0.2.1':
     resolution: {integrity: sha512-YstAqNb0MCN8PjdLCDfRsBcGVRN41f3vgLvaI0IrIcBp4AqILRSS0DeWNGkicC+f/zRIPJLc+9RURVSepwvfBw==}
@@ -6158,21 +6155,19 @@ snapshots:
       '@bufbuild/buf-win32-arm64': 1.54.0
       '@bufbuild/buf-win32-x64': 1.54.0
 
-  '@bufbuild/protobuf@2.2.5': {}
-
   '@bufbuild/protobuf@2.4.0': {}
 
-  '@bufbuild/protoc-gen-es@2.2.5(@bufbuild/protobuf@2.4.0)':
+  '@bufbuild/protoc-gen-es@2.4.0(@bufbuild/protobuf@2.4.0)':
     dependencies:
-      '@bufbuild/protoplugin': 2.2.5
+      '@bufbuild/protoplugin': 2.4.0
     optionalDependencies:
       '@bufbuild/protobuf': 2.4.0
     transitivePeerDependencies:
       - supports-color
 
-  '@bufbuild/protoplugin@2.2.5':
+  '@bufbuild/protoplugin@2.4.0':
     dependencies:
-      '@bufbuild/protobuf': 2.2.5
+      '@bufbuild/protobuf': 2.4.0
       '@typescript/vfs': 1.6.1(typescript@5.4.5)
       typescript: 5.4.5
     transitivePeerDependencies: