diff --git a/package.json b/package.json
index 3f5c0b18f..6085ef183 100644
--- a/package.json
+++ b/package.json
@@ -102,7 +102,7 @@
   },
   "devDependencies": {
     "@bufbuild/buf": "1.54.0",
-    "@bufbuild/protoc-gen-es": "2.4.0",
+    "@bufbuild/protoc-gen-es": "2.5.1",
     "@playwright/test": "1.52.0",
     "@squonk/eslint-config": "3.0.0",
     "dotenv": "16.5.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 2f22ea2a4..56eb7d8bb 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -213,8 +213,8 @@ importers:
         specifier: 1.54.0
         version: 1.54.0
       '@bufbuild/protoc-gen-es':
-        specifier: 2.4.0
-        version: 2.4.0(@bufbuild/protobuf@2.5.1)
+        specifier: 2.5.1
+        version: 2.5.1(@bufbuild/protobuf@2.5.1)
       '@playwright/test':
         specifier: 1.52.0
         version: 1.52.0
@@ -366,24 +366,21 @@ packages:
     engines: {node: '>=12'}
     hasBin: true
 
-  '@bufbuild/protobuf@2.4.0':
-    resolution: {integrity: sha512-RN9M76x7N11QRihKovEglEjjVCQEA9PRBVnDgk9xw8JHLrcUrp4FpAVSPSH91cNbcTft3u2vpLN4GMbiKY9PJw==}
-
   '@bufbuild/protobuf@2.5.1':
     resolution: {integrity: sha512-lut4UTvKL8tqtend0UDu7R79/n9jA7Jtxf77RNPbxtmWqfWI4qQ9bTjf7KCS4vfqLmpQbuHr1ciqJumAgJODdw==}
 
-  '@bufbuild/protoc-gen-es@2.4.0':
-    resolution: {integrity: sha512-f5nm7HxXwVJKcAqpUTevKeLJOjy9WWqAuYORx3AnlB7w+XHPo/qrjQgMh4a9Dy1/aixYvBw2CnNK5d0DZ6CRgw==}
+  '@bufbuild/protoc-gen-es@2.5.1':
+    resolution: {integrity: sha512-qsRqmwWWd3W+/xb76gKv1fsLfNohrXm54rfqPzFX0RkAhh+YEEPeUyG3Ecgeomi22pH/gD+TaptkQl8dpbj13w==}
     engines: {node: '>=14'}
     hasBin: true
     peerDependencies:
-      '@bufbuild/protobuf': 2.4.0
+      '@bufbuild/protobuf': 2.5.1
     peerDependenciesMeta:
       '@bufbuild/protobuf':
         optional: true
 
-  '@bufbuild/protoplugin@2.4.0':
-    resolution: {integrity: sha512-Y7Wxis00uKM58UOM21aVECsMoPHzKvHJBH05bpmAhlOWXhVjtFDStOwB2gIiUB1rumbwOmjHTDe/bGP5M4HxmA==}
+  '@bufbuild/protoplugin@2.5.1':
+    resolution: {integrity: sha512-viJAgCqPUw1JZQxYTdhbRmMy5+C0afS52ak7CgeKL8R7bwVHWb8HjOFMMvJwPXb8fkDQqxIEBdWP7Yn00Dnikw==}
 
   '@choojs/findup@0.2.1':
     resolution: {integrity: sha512-YstAqNb0MCN8PjdLCDfRsBcGVRN41f3vgLvaI0IrIcBp4AqILRSS0DeWNGkicC+f/zRIPJLc+9RURVSepwvfBw==}
@@ -6218,21 +6215,19 @@ snapshots:
       '@bufbuild/buf-win32-arm64': 1.54.0
       '@bufbuild/buf-win32-x64': 1.54.0
 
-  '@bufbuild/protobuf@2.4.0': {}
-
   '@bufbuild/protobuf@2.5.1': {}
 
-  '@bufbuild/protoc-gen-es@2.4.0(@bufbuild/protobuf@2.5.1)':
+  '@bufbuild/protoc-gen-es@2.5.1(@bufbuild/protobuf@2.5.1)':
     dependencies:
-      '@bufbuild/protoplugin': 2.4.0
+      '@bufbuild/protoplugin': 2.5.1
     optionalDependencies:
       '@bufbuild/protobuf': 2.5.1
     transitivePeerDependencies:
       - supports-color
 
-  '@bufbuild/protoplugin@2.4.0':
+  '@bufbuild/protoplugin@2.5.1':
     dependencies:
-      '@bufbuild/protobuf': 2.4.0
+      '@bufbuild/protobuf': 2.5.1
       '@typescript/vfs': 1.6.1(typescript@5.4.5)
       typescript: 5.4.5
     transitivePeerDependencies: