diff --git a/package.json b/package.json
index 68e98c5e..8f3a78af 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,7 @@
     "@google-cloud/common": "^5.0.0",
     "@google-cloud/paginator": "^5.0.0",
     "@google-cloud/projectify": "^4.0.0",
-    "@google-cloud/promisify": "^4.0.0",
+    "@google-cloud/promisify": "4.0.0",
     "arrify": "^2.0.1",
     "dot-prop": "^6.0.0",
     "eventid": "^2.0.0",
@@ -89,7 +89,8 @@
     "null-loader": "^4.0.0",
     "pack-n-play": "^2.0.0",
     "proxyquire": "^2.1.3",
-    "sinon": "^18.0.0",
+    "sinon": "18.0.0",
+    "path-to-regexp": "6.2.2",
     "ts-loader": "^9.0.0",
     "typescript": "^5.1.6",
     "uglify-js": "^3.13.5",
diff --git a/protos/protos.d.ts b/protos/protos.d.ts
index c721f107..8b3a9888 100644
--- a/protos/protos.d.ts
+++ b/protos/protos.d.ts
@@ -1,4 +1,4 @@
-// Copyright 2024 Google LLC
+// Copyright 2025 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/protos/protos.js b/protos/protos.js
index e92f5752..09bd536d 100644
--- a/protos/protos.js
+++ b/protos/protos.js
@@ -1,4 +1,4 @@
-// Copyright 2024 Google LLC
+// Copyright 2025 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/protos/protos.json b/protos/protos.json
index 3861f95a..1d8f1bad 100644
--- a/protos/protos.json
+++ b/protos/protos.json
@@ -1,4 +1,7 @@
 {
+  "options": {
+    "syntax": "proto3"
+  },
   "nested": {
     "google": {
       "nested": {