diff --git a/public/app-adminsys.nix b/public/app-adminsys.nix
index 524e7a6..4f987b8 100644
--- a/public/app-adminsys.nix
+++ b/public/app-adminsys.nix
@@ -23,6 +23,9 @@ mkIf true {
     python27Packages.glances
     usbutils
 
+    # Backup
+    duplicity
+
     # Compression
     lz4
     lzop