diff --git a/package.json b/package.json
index 4043258b4..e2d636d96 100644
--- a/package.json
+++ b/package.json
@@ -77,7 +77,7 @@
     "@types/pumpify": "^1.4.1",
     "@types/sinon": "^10.0.0",
     "@types/uuid": "^9.0.0",
-    "c8": "^8.0.1",
+    "c8": "^9.0.0",
     "codecov": "^3.6.5",
     "gapic-tools": "^0.1.8",
     "gts": "^5.0.0",
diff --git a/protos/protos.d.ts b/protos/protos.d.ts
index ade7bc7ec..a01e3049b 100644
--- a/protos/protos.d.ts
+++ b/protos/protos.d.ts
@@ -1,4 +1,4 @@
-// Copyright 2023 Google LLC
+// Copyright 2024 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 4620fa30d..029a9a984 100644
--- a/protos/protos.js
+++ b/protos/protos.js
@@ -1,4 +1,4 @@
-// Copyright 2023 Google LLC
+// Copyright 2024 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.