1 files changed, 1 insertions, 0 deletions
diff --git a/IDEAS.md b/IDEAS.md
index 76d5f97..29f3f6f 100644
--- a/IDEAS.md
+++ b/IDEAS.md
@@ -8,6 +8,7 @@ Ideas
   * Public domain
   * Creative Commons
   * Perl
+  * Add [Software Package Data Exchange (SPDX)](https://spdx.org) ([about](https://lwn.net/Articles/739183/)) into files
 * Metafiles:
   * Changelog formats
   * Semver