diff --git a/.pre-commit-hooks.yaml b/.pre-commit-hooks.yaml
index 444e3fc..eb84b46 100644
--- a/.pre-commit-hooks.yaml
+++ b/.pre-commit-hooks.yaml
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: CC0-1.0
  - id: meson test
    name: meson test
    description: Run all meson tests