diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 37afdf4..761e6a7 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -17,7 +17,7 @@ repos:
   - id: pretty-format-json
     args: [--no-sort-keys, --autofix, --no-ensure-ascii]
 - repo: https://github.com/astral-sh/ruff-pre-commit
-  rev: v0.15.22
+  rev: v0.16.0
   hooks:
   - id: ruff-check
     args: [--fix, --exit-non-zero-on-fix]
diff --git a/pyproject.toml b/pyproject.toml
index 9f56754..ee6e45f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,6 +16,10 @@ ignore = [
 ]
 select = ["ALL"]
 
+[tool.ruff.lint.flake8-copyright]
+min-file-size = 2
+notice-rgx = "(?i)Copyright\\s+©\\s+"
+
 [tool.tomlsort]
 ignore_case = true
 sort_inline_arrays = true
diff --git a/repo-sync.py b/repo-sync.py
index 0a09e13..0af0bbc 100644
--- a/repo-sync.py
+++ b/repo-sync.py
@@ -1,3 +1,7 @@
+# Copyright © Michal Čihař <michal@weblate.org>
+#
+# SPDX-License-Identifier: BSD-3-Clause
+
 """
 Synchronizes shared content between Python Social Auth repositories.