diff --git a/seed/piwigo/UPGRADE.txt b/seed/piwigo/UPGRADE.txt
new file mode 100644
index 00000000..ca3e6c36
--- /dev/null
+++ b/seed/piwigo/UPGRADE.txt
@@ -0,0 +1 @@
+Upgrade plugins in piwigo/manual/image/postinstall/piwigo.sh