diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..90b34c0
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: LGPL-3.0-or-later
+# See Notices.txt for copyright information
+*.vcd linguist-generated=true
diff --git a/scripts/check-copyright.sh b/scripts/check-copyright.sh
index 8a00081..0b90d9f 100755
--- a/scripts/check-copyright.sh
+++ b/scripts/check-copyright.sh
@@ -49,7 +49,7 @@ function main()
         /crates/cpu/tests/expected/*.vcd|/crates/cpu/tests/expected/*.txt)
             # file that can't contain copyright header
             ;;
-        /.forgejo/workflows/*.yml|*/.gitignore|*.toml)
+        /.forgejo/workflows/*.yml|*/.gitignore|*/.gitattributes|*.toml)
             check_file "$file" "${POUND_HEADER[@]}"
             ;;
         *.mermaid)