diff --git a/configuration.nix b/configuration.nix
index 668c283..238d4de 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -38,6 +38,16 @@
 
   console.keyMap = "fr";
 
+  programs.nh = {
+    enable = true;
+    clean = {
+      enable = true;
+      extraArgs = "--keep 10";
+      dates = "hourly";
+    };
+    flake = "/home/baptiste/srv-sin";
+  };
+
   users.users.baptiste = {
     isNormalUser = true;
     description = "server1";