diff --git a/PKGBUILD b/PKGBUILD
index 876c64032b1e..b5b8e9221fb7 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -9,6 +9,9 @@ arch=('i686' 'x86_64' 'arm' 'armv7h' 'armv6h' 'aarch64')
 url="https://n8n.io"
 license=("custom:Sustainable Use License")
 backup=("etc/default/${pkgname}")
+# Check upstream nodejs version constraints with:
+#   curl -s "https://registry.npmjs.org/n8n/${pkgver}" | jq -r '.engines.node'
+# Example output: ">=20.19 <= 24.x" means nodejs>=20.19.0 and nodejs<25
 depends=("nodejs>=20.19.0" "nodejs<25")
 makedepends=("npm" "jq" "curl")
 source=("${pkgname}.env"