diff --git a/check_licenses.sh b/check_licenses.sh
new file mode 100644
index 0000000..7cc4621
--- /dev/null
+++ b/check_licenses.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+! rg --multiline --files-without-match --glob '*.rs' --pcre2  '(?<!\n)((//)|(#)) Copyright \(c\) \d+ [A-z, ]+\n((//)|(#)) SPDX-License-Identifier: .*\n'