diff --git a/.github/workflows/boj-build.yml b/.github/workflows/boj-build.yml
index 58a6ab3..f886cd9 100644
--- a/.github/workflows/boj-build.yml
+++ b/.github/workflows/boj-build.yml
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MPL-2.0
 name: BoJ Server Build Trigger
 on:
   push: