diff --git a/scripts/upgrade b/scripts/upgrade
index dac1a89..0818dbf 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -31,6 +31,7 @@ then
 
 	# Download, check integrity, uncompress and patch the source from app.src
 	ynh_setup_source --dest_dir="$install_dir" --keep="var/invoices/ var/data/"
+	ynh_secure_remove --file="$install_dir/var/plugins/*"
 fi
 
 chmod -R o-rwx "$install_dir"