diff --git a/community/xournalpp/APKBUILD b/community/xournalpp/APKBUILD
index 78c40591080..04410d97e5c 100644
--- a/community/xournalpp/APKBUILD
+++ b/community/xournalpp/APKBUILD
@@ -9,8 +9,9 @@ url="https://github.com/xournalpp/xournalpp"
 arch="all"
 license="GPL-2.0-or-later"
 depends="adwaita-icon-theme"
-_gtestver=1.16.0
-_luaver=5.4
+_gtestver=1.16.0 # test/CMakeLists.txt
+# Please check _luaver is supported upstream before switching.
+_luaver=5.4 # source repo
 makedepends="
 	cmake
 	glib-dev