diff --git a/protos/cerbos/audit/v1/audit.proto b/protos/cerbos/audit/v1/audit.proto
index 73cc214..1b1cc66 100644
--- a/protos/cerbos/audit/v1/audit.proto
+++ b/protos/cerbos/audit/v1/audit.proto
@@ -1,4 +1,4 @@
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 
 syntax = "proto3";
diff --git a/protos/cerbos/effect/v1/effect.proto b/protos/cerbos/effect/v1/effect.proto
index 97c37a8..8e3f47d 100644
--- a/protos/cerbos/effect/v1/effect.proto
+++ b/protos/cerbos/effect/v1/effect.proto
@@ -1,4 +1,4 @@
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 
 syntax = "proto3";
diff --git a/protos/cerbos/engine/v1/engine.proto b/protos/cerbos/engine/v1/engine.proto
index 6ae6411..8f1313c 100644
--- a/protos/cerbos/engine/v1/engine.proto
+++ b/protos/cerbos/engine/v1/engine.proto
@@ -1,4 +1,4 @@
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 
 syntax = "proto3";
diff --git a/protos/cerbos/policy/v1/policy.proto b/protos/cerbos/policy/v1/policy.proto
index 84ebfb7..edec982 100644
--- a/protos/cerbos/policy/v1/policy.proto
+++ b/protos/cerbos/policy/v1/policy.proto
@@ -1,4 +1,4 @@
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 
 syntax = "proto3";
diff --git a/protos/cerbos/request/v1/request.proto b/protos/cerbos/request/v1/request.proto
index 2874b54..d3db53c 100644
--- a/protos/cerbos/request/v1/request.proto
+++ b/protos/cerbos/request/v1/request.proto
@@ -1,4 +1,4 @@
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 
 syntax = "proto3";
diff --git a/protos/cerbos/response/v1/response.proto b/protos/cerbos/response/v1/response.proto
index 322329b..dd44a99 100644
--- a/protos/cerbos/response/v1/response.proto
+++ b/protos/cerbos/response/v1/response.proto
@@ -1,4 +1,4 @@
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 
 syntax = "proto3";
diff --git a/protos/cerbos/schema/v1/schema.proto b/protos/cerbos/schema/v1/schema.proto
index a15fde9..6f78fb7 100644
--- a/protos/cerbos/schema/v1/schema.proto
+++ b/protos/cerbos/schema/v1/schema.proto
@@ -1,4 +1,4 @@
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 
 syntax = "proto3";
diff --git a/protos/cerbos/svc/v1/svc.proto b/protos/cerbos/svc/v1/svc.proto
index 7eefa37..7439fad 100644
--- a/protos/cerbos/svc/v1/svc.proto
+++ b/protos/cerbos/svc/v1/svc.proto
@@ -1,4 +1,4 @@
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 
 syntax = "proto3";
diff --git a/protos/cerbos/telemetry/v1/telemetry.proto b/protos/cerbos/telemetry/v1/telemetry.proto
index 2854ac9..ae475d0 100644
--- a/protos/cerbos/telemetry/v1/telemetry.proto
+++ b/protos/cerbos/telemetry/v1/telemetry.proto
@@ -1,4 +1,4 @@
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 
 syntax = "proto3";
diff --git a/src/Sdk.UnitTests/Cerbos/Sdk/UnitTests/Builder/AttributeValueTest.cs b/src/Sdk.UnitTests/Cerbos/Sdk/UnitTests/Builder/AttributeValueTest.cs
index f037987..a528078 100644
--- a/src/Sdk.UnitTests/Cerbos/Sdk/UnitTests/Builder/AttributeValueTest.cs
+++ b/src/Sdk.UnitTests/Cerbos/Sdk/UnitTests/Builder/AttributeValueTest.cs
@@ -1,4 +1,4 @@
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 
 using Cerbos.Sdk.Builder;
diff --git a/src/Sdk.UnitTests/Cerbos/Sdk/UnitTests/Builder/AuxDataTest.cs b/src/Sdk.UnitTests/Cerbos/Sdk/UnitTests/Builder/AuxDataTest.cs
index 73db58f..e5f4469 100644
--- a/src/Sdk.UnitTests/Cerbos/Sdk/UnitTests/Builder/AuxDataTest.cs
+++ b/src/Sdk.UnitTests/Cerbos/Sdk/UnitTests/Builder/AuxDataTest.cs
@@ -1,4 +1,4 @@
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 
 using Cerbos.Sdk.Builder;
diff --git a/src/Sdk.UnitTests/Cerbos/Sdk/UnitTests/Builder/PrincipalTest.cs b/src/Sdk.UnitTests/Cerbos/Sdk/UnitTests/Builder/PrincipalTest.cs
index 35a4d7d..d60927e 100644
--- a/src/Sdk.UnitTests/Cerbos/Sdk/UnitTests/Builder/PrincipalTest.cs
+++ b/src/Sdk.UnitTests/Cerbos/Sdk/UnitTests/Builder/PrincipalTest.cs
@@ -1,4 +1,4 @@
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 
 using Cerbos.Sdk.Builder;
diff --git a/src/Sdk.UnitTests/Cerbos/Sdk/UnitTests/Builder/ResourceEntryTest.cs b/src/Sdk.UnitTests/Cerbos/Sdk/UnitTests/Builder/ResourceEntryTest.cs
index 0834ea1..4943290 100644
--- a/src/Sdk.UnitTests/Cerbos/Sdk/UnitTests/Builder/ResourceEntryTest.cs
+++ b/src/Sdk.UnitTests/Cerbos/Sdk/UnitTests/Builder/ResourceEntryTest.cs
@@ -1,4 +1,4 @@
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 
 using Cerbos.Sdk.Builder;
diff --git a/src/Sdk.UnitTests/Cerbos/Sdk/UnitTests/Builder/ResourceTest.cs b/src/Sdk.UnitTests/Cerbos/Sdk/UnitTests/Builder/ResourceTest.cs
index 850bcbf..300e255 100644
--- a/src/Sdk.UnitTests/Cerbos/Sdk/UnitTests/Builder/ResourceTest.cs
+++ b/src/Sdk.UnitTests/Cerbos/Sdk/UnitTests/Builder/ResourceTest.cs
@@ -1,4 +1,4 @@
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 
 using Cerbos.Sdk.Builder;
diff --git a/src/Sdk.UnitTests/Cerbos/Sdk/UnitTests/CerbosClientTest.cs b/src/Sdk.UnitTests/Cerbos/Sdk/UnitTests/CerbosClientTest.cs
index bbf1f10..183f865 100644
--- a/src/Sdk.UnitTests/Cerbos/Sdk/UnitTests/CerbosClientTest.cs
+++ b/src/Sdk.UnitTests/Cerbos/Sdk/UnitTests/CerbosClientTest.cs
@@ -1,4 +1,4 @@
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 
 using Cerbos.Api.V1.Engine;
diff --git a/src/Sdk/Cerbos/Sdk/Builder/AttributeValue.cs b/src/Sdk/Cerbos/Sdk/Builder/AttributeValue.cs
index f7fe654..f5c3724 100644
--- a/src/Sdk/Cerbos/Sdk/Builder/AttributeValue.cs
+++ b/src/Sdk/Cerbos/Sdk/Builder/AttributeValue.cs
@@ -1,4 +1,4 @@
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 
 using System.Collections.Generic;
diff --git a/src/Sdk/Cerbos/Sdk/Builder/AuxData.cs b/src/Sdk/Cerbos/Sdk/Builder/AuxData.cs
index 6fcf129..ad54088 100644
--- a/src/Sdk/Cerbos/Sdk/Builder/AuxData.cs
+++ b/src/Sdk/Cerbos/Sdk/Builder/AuxData.cs
@@ -1,4 +1,4 @@
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 
 namespace Cerbos.Sdk.Builder
diff --git a/src/Sdk/Cerbos/Sdk/Builder/CerbosClientBuilder.cs b/src/Sdk/Cerbos/Sdk/Builder/CerbosClientBuilder.cs
index 104dc5d..0993735 100644
--- a/src/Sdk/Cerbos/Sdk/Builder/CerbosClientBuilder.cs
+++ b/src/Sdk/Cerbos/Sdk/Builder/CerbosClientBuilder.cs
@@ -1,4 +1,4 @@
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 
 using System;
diff --git a/src/Sdk/Cerbos/Sdk/Builder/CheckResourcesRequest.cs b/src/Sdk/Cerbos/Sdk/Builder/CheckResourcesRequest.cs
index 6bfbb42..42f157b 100644
--- a/src/Sdk/Cerbos/Sdk/Builder/CheckResourcesRequest.cs
+++ b/src/Sdk/Cerbos/Sdk/Builder/CheckResourcesRequest.cs
@@ -1,4 +1,4 @@
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 
 using System;
diff --git a/src/Sdk/Cerbos/Sdk/Builder/PlanResourcesRequest.cs b/src/Sdk/Cerbos/Sdk/Builder/PlanResourcesRequest.cs
index 27c52d3..427b412 100644
--- a/src/Sdk/Cerbos/Sdk/Builder/PlanResourcesRequest.cs
+++ b/src/Sdk/Cerbos/Sdk/Builder/PlanResourcesRequest.cs
@@ -1,4 +1,4 @@
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 
 using System;
diff --git a/src/Sdk/Cerbos/Sdk/Builder/Principal.cs b/src/Sdk/Cerbos/Sdk/Builder/Principal.cs
index e56467a..f418664 100644
--- a/src/Sdk/Cerbos/Sdk/Builder/Principal.cs
+++ b/src/Sdk/Cerbos/Sdk/Builder/Principal.cs
@@ -1,4 +1,4 @@
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 
 using System.Collections.Generic;
diff --git a/src/Sdk/Cerbos/Sdk/Builder/Resource.cs b/src/Sdk/Cerbos/Sdk/Builder/Resource.cs
index 6442639..15fd06a 100644
--- a/src/Sdk/Cerbos/Sdk/Builder/Resource.cs
+++ b/src/Sdk/Cerbos/Sdk/Builder/Resource.cs
@@ -1,4 +1,4 @@
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 
 using System.Collections.Generic;
diff --git a/src/Sdk/Cerbos/Sdk/Builder/ResourceEntry.cs b/src/Sdk/Cerbos/Sdk/Builder/ResourceEntry.cs
index dad84d3..c796f59 100644
--- a/src/Sdk/Cerbos/Sdk/Builder/ResourceEntry.cs
+++ b/src/Sdk/Cerbos/Sdk/Builder/ResourceEntry.cs
@@ -1,4 +1,4 @@
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 
 using System.Collections.Generic;
diff --git a/src/Sdk/Cerbos/Sdk/CerbosClient.cs b/src/Sdk/Cerbos/Sdk/CerbosClient.cs
index fa7eabb..bfb6267 100644
--- a/src/Sdk/Cerbos/Sdk/CerbosClient.cs
+++ b/src/Sdk/Cerbos/Sdk/CerbosClient.cs
@@ -1,4 +1,4 @@
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 
 using System;
diff --git a/src/Sdk/Cerbos/Sdk/ICerbosClient.cs b/src/Sdk/Cerbos/Sdk/ICerbosClient.cs
index 4c07c7e..3d829c2 100644
--- a/src/Sdk/Cerbos/Sdk/ICerbosClient.cs
+++ b/src/Sdk/Cerbos/Sdk/ICerbosClient.cs
@@ -1,3 +1,6 @@
+// Copyright 2021-2025 Zenauth Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
 using System.Threading.Tasks;
 using Cerbos.Sdk.Response;
 using Grpc.Core;
diff --git a/src/Sdk/Cerbos/Sdk/Response/CheckResourcesResponse.cs b/src/Sdk/Cerbos/Sdk/Response/CheckResourcesResponse.cs
index 8f7ebab..adbd7eb 100644
--- a/src/Sdk/Cerbos/Sdk/Response/CheckResourcesResponse.cs
+++ b/src/Sdk/Cerbos/Sdk/Response/CheckResourcesResponse.cs
@@ -1,4 +1,4 @@
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 
 using System;
diff --git a/src/Sdk/Cerbos/Sdk/Response/PlanResourcesResponse.cs b/src/Sdk/Cerbos/Sdk/Response/PlanResourcesResponse.cs
index eb10285..b10e1a2 100644
--- a/src/Sdk/Cerbos/Sdk/Response/PlanResourcesResponse.cs
+++ b/src/Sdk/Cerbos/Sdk/Response/PlanResourcesResponse.cs
@@ -1,4 +1,4 @@
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 
 using System.Collections.Generic;
diff --git a/src/Sdk/Cerbos/Sdk/Utility/RequestId.cs b/src/Sdk/Cerbos/Sdk/Utility/RequestId.cs
index 49a7a34..80041e0 100644
--- a/src/Sdk/Cerbos/Sdk/Utility/RequestId.cs
+++ b/src/Sdk/Cerbos/Sdk/Utility/RequestId.cs
@@ -1,4 +1,4 @@
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 
 using System;
diff --git a/src/Sdk/SvcGrpc.cs b/src/Sdk/SvcGrpc.cs
index a3a4c60..4f2edda 100644
--- a/src/Sdk/SvcGrpc.cs
+++ b/src/Sdk/SvcGrpc.cs
@@ -3,7 +3,7 @@
 //     source: cerbos/svc/v1/svc.proto
 // </auto-generated>
 // Original file comments:
-// Copyright 2021-2024 Zenauth Ltd.
+// Copyright 2021-2025 Zenauth Ltd.
 // SPDX-License-Identifier: Apache-2.0
 //
 #pragma warning disable 0414, 1591, 8981, 0612