diff --git a/BUILD.bazel b/BUILD.bazel
index 29a76bb..1c23345 100644
--- a/BUILD.bazel
+++ b/BUILD.bazel
@@ -1,4 +1,4 @@
-# Copyright 2023 Buf Technologies, Inc.
+# Copyright 2023-2025 Buf Technologies, Inc.
 #
 # 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/LICENSE b/LICENSE
index f308f8b..3e1d480 100644
--- a/LICENSE
+++ b/LICENSE
@@ -186,7 +186,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright 2023 Buf Technologies, Inc.
+   Copyright 2023-2025 Buf Technologies, Inc.
 
    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/Makefile b/Makefile
index 373d2e0..aeba82f 100644
--- a/Makefile
+++ b/Makefile
@@ -7,7 +7,7 @@ MAKEFLAGS += --warn-undefined-variables
 MAKEFLAGS += --no-builtin-rules
 MAKEFLAGS += --no-print-directory
 BIN := .tmp/bin
-COPYRIGHT_YEARS := 2023
+COPYRIGHT_YEARS := 2023-2025
 LICENSE_IGNORE := -e internal/testdata/
 LICENSE_HEADER_VERSION := 0294fdbe1ce8649ebaf5e87e8cdd588e33730bbb
 PROTOVALIDATE_VERSION ?= v$(shell <./deps/shared_deps.json jq -j .protovalidate.meta.version)
diff --git a/bazel/BUILD.bazel b/bazel/BUILD.bazel
index 9c555b5..d7ded61 100644
--- a/bazel/BUILD.bazel
+++ b/bazel/BUILD.bazel
@@ -1,4 +1,4 @@
-# Copyright 2023 Buf Technologies, Inc.
+# Copyright 2023-2025 Buf Technologies, Inc.
 #
 # 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/bazel/deps.bzl b/bazel/deps.bzl
index f2e940f..ddc3b06 100644
--- a/bazel/deps.bzl
+++ b/bazel/deps.bzl
@@ -1,4 +1,4 @@
-# Copyright 2023 Buf Technologies, Inc.
+# Copyright 2023-2025 Buf Technologies, Inc.
 #
 # 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/bazel/json.bzl b/bazel/json.bzl
index 3f53f85..e79263b 100644
--- a/bazel/json.bzl
+++ b/bazel/json.bzl
@@ -1,4 +1,4 @@
-# Copyright 2023 Buf Technologies, Inc.
+# Copyright 2023-2025 Buf Technologies, Inc.
 #
 # 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/buf/BUILD.bazel b/buf/BUILD.bazel
index 29a76bb..1c23345 100644
--- a/buf/BUILD.bazel
+++ b/buf/BUILD.bazel
@@ -1,4 +1,4 @@
-# Copyright 2023 Buf Technologies, Inc.
+# Copyright 2023-2025 Buf Technologies, Inc.
 #
 # 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/buf/validate/BUILD.bazel b/buf/validate/BUILD.bazel
index 6adfc45..6f0aa2b 100644
--- a/buf/validate/BUILD.bazel
+++ b/buf/validate/BUILD.bazel
@@ -1,4 +1,4 @@
-# Copyright 2023 Buf Technologies, Inc.
+# Copyright 2023-2025 Buf Technologies, Inc.
 #
 # 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/buf/validate/conformance/BUILD.bazel b/buf/validate/conformance/BUILD.bazel
index 3d24ae6..cdd9639 100644
--- a/buf/validate/conformance/BUILD.bazel
+++ b/buf/validate/conformance/BUILD.bazel
@@ -1,4 +1,4 @@
-# Copyright 2023 Buf Technologies, Inc.
+# Copyright 2023-2025 Buf Technologies, Inc.
 #
 # 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/buf/validate/conformance/runner.cc b/buf/validate/conformance/runner.cc
index f54beef..c2a0aa7 100644
--- a/buf/validate/conformance/runner.cc
+++ b/buf/validate/conformance/runner.cc
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/buf/validate/conformance/runner.h b/buf/validate/conformance/runner.h
index 339afa3..8408778 100644
--- a/buf/validate/conformance/runner.h
+++ b/buf/validate/conformance/runner.h
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/buf/validate/conformance/runner_main.cc b/buf/validate/conformance/runner_main.cc
index acd421d..3bf70aa 100644
--- a/buf/validate/conformance/runner_main.cc
+++ b/buf/validate/conformance/runner_main.cc
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/buf/validate/conformance/runner_test.cc b/buf/validate/conformance/runner_test.cc
index 4e24c42..ee61f1a 100644
--- a/buf/validate/conformance/runner_test.cc
+++ b/buf/validate/conformance/runner_test.cc
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/buf/validate/internal/BUILD.bazel b/buf/validate/internal/BUILD.bazel
index 69dbf28..2f6bfd7 100644
--- a/buf/validate/internal/BUILD.bazel
+++ b/buf/validate/internal/BUILD.bazel
@@ -1,4 +1,4 @@
-# Copyright 2023 Buf Technologies, Inc.
+# Copyright 2023-2025 Buf Technologies, Inc.
 #
 # 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/buf/validate/internal/cel_constraint_rules.cc b/buf/validate/internal/cel_constraint_rules.cc
index 9e5b6ab..2dd0104 100644
--- a/buf/validate/internal/cel_constraint_rules.cc
+++ b/buf/validate/internal/cel_constraint_rules.cc
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/buf/validate/internal/cel_constraint_rules.h b/buf/validate/internal/cel_constraint_rules.h
index 79cac39..4fe44b9 100644
--- a/buf/validate/internal/cel_constraint_rules.h
+++ b/buf/validate/internal/cel_constraint_rules.h
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/buf/validate/internal/cel_rules.h b/buf/validate/internal/cel_rules.h
index b409505..6ab944e 100644
--- a/buf/validate/internal/cel_rules.h
+++ b/buf/validate/internal/cel_rules.h
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/buf/validate/internal/constraint_rules.h b/buf/validate/internal/constraint_rules.h
index 05a9a97..b05349d 100644
--- a/buf/validate/internal/constraint_rules.h
+++ b/buf/validate/internal/constraint_rules.h
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/buf/validate/internal/constraints.cc b/buf/validate/internal/constraints.cc
index a828473..550d909 100644
--- a/buf/validate/internal/constraints.cc
+++ b/buf/validate/internal/constraints.cc
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/buf/validate/internal/constraints.h b/buf/validate/internal/constraints.h
index 6dd8626..b23d6fd 100644
--- a/buf/validate/internal/constraints.h
+++ b/buf/validate/internal/constraints.h
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/buf/validate/internal/constraints_test.cc b/buf/validate/internal/constraints_test.cc
index 545ccf2..c62ac57 100644
--- a/buf/validate/internal/constraints_test.cc
+++ b/buf/validate/internal/constraints_test.cc
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/buf/validate/internal/extra_func.cc b/buf/validate/internal/extra_func.cc
index 86935e7..53f4c51 100644
--- a/buf/validate/internal/extra_func.cc
+++ b/buf/validate/internal/extra_func.cc
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/buf/validate/internal/extra_func.h b/buf/validate/internal/extra_func.h
index 98e85f3..548a2bb 100644
--- a/buf/validate/internal/extra_func.h
+++ b/buf/validate/internal/extra_func.h
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/buf/validate/internal/extra_func_test.cc b/buf/validate/internal/extra_func_test.cc
index e495d36..c4ea4cd 100644
--- a/buf/validate/internal/extra_func_test.cc
+++ b/buf/validate/internal/extra_func_test.cc
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/buf/validate/internal/field_rules.cc b/buf/validate/internal/field_rules.cc
index 7a715a3..38d1d4a 100644
--- a/buf/validate/internal/field_rules.cc
+++ b/buf/validate/internal/field_rules.cc
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/buf/validate/internal/field_rules.h b/buf/validate/internal/field_rules.h
index 108f42f..16c9ac2 100644
--- a/buf/validate/internal/field_rules.h
+++ b/buf/validate/internal/field_rules.h
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/buf/validate/internal/message_factory.cc b/buf/validate/internal/message_factory.cc
index 6ed2e87..0d1762b 100644
--- a/buf/validate/internal/message_factory.cc
+++ b/buf/validate/internal/message_factory.cc
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/buf/validate/internal/message_factory.h b/buf/validate/internal/message_factory.h
index a70d0c2..6f39aa6 100644
--- a/buf/validate/internal/message_factory.h
+++ b/buf/validate/internal/message_factory.h
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/buf/validate/internal/message_rules.cc b/buf/validate/internal/message_rules.cc
index 95e01c1..de7b9f7 100644
--- a/buf/validate/internal/message_rules.cc
+++ b/buf/validate/internal/message_rules.cc
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/buf/validate/internal/message_rules.h b/buf/validate/internal/message_rules.h
index 438a042..631d91e 100644
--- a/buf/validate/internal/message_rules.h
+++ b/buf/validate/internal/message_rules.h
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/buf/validate/internal/proto_field.h b/buf/validate/internal/proto_field.h
index 6c1e25e..c7ecc81 100644
--- a/buf/validate/internal/proto_field.h
+++ b/buf/validate/internal/proto_field.h
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/buf/validate/internal/string_format.cc b/buf/validate/internal/string_format.cc
index 6492621..4fc067c 100644
--- a/buf/validate/internal/string_format.cc
+++ b/buf/validate/internal/string_format.cc
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/buf/validate/internal/string_format.h b/buf/validate/internal/string_format.h
index 856bf92..b85fcc7 100644
--- a/buf/validate/internal/string_format.h
+++ b/buf/validate/internal/string_format.h
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/buf/validate/internal/string_format_test.cc b/buf/validate/internal/string_format_test.cc
index e7b0a20..6473699 100644
--- a/buf/validate/internal/string_format_test.cc
+++ b/buf/validate/internal/string_format_test.cc
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/buf/validate/validator.cc b/buf/validate/validator.cc
index 633f8a2..129a089 100644
--- a/buf/validate/validator.cc
+++ b/buf/validate/validator.cc
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/buf/validate/validator.h b/buf/validate/validator.h
index 2106afd..21beb60 100644
--- a/buf/validate/validator.h
+++ b/buf/validate/validator.h
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/buf/validate/validator_test.cc b/buf/validate/validator_test.cc
index be1f5f7..a972fa8 100644
--- a/buf/validate/validator_test.cc
+++ b/buf/validate/validator_test.cc
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/cmake/example/example.proto b/cmake/example/example.proto
index 1850e84..93df810 100644
--- a/cmake/example/example.proto
+++ b/cmake/example/example.proto
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/cmake/example/main.cc b/cmake/example/main.cc
index aed3630..498289f 100644
--- a/cmake/example/main.cc
+++ b/cmake/example/main.cc
@@ -1,4 +1,4 @@
-// Copyright 2023 Buf Technologies, Inc.
+// Copyright 2023-2025 Buf Technologies, Inc.
 //
 // 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/deps/BUILD.bazel b/deps/BUILD.bazel
index 9c555b5..d7ded61 100644
--- a/deps/BUILD.bazel
+++ b/deps/BUILD.bazel
@@ -1,4 +1,4 @@
-# Copyright 2023 Buf Technologies, Inc.
+# Copyright 2023-2025 Buf Technologies, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.