diff --git a/hosts/poseidon/default.nix b/hosts/poseidon/default.nix
index 1ff88f2..7077116 100644
--- a/hosts/poseidon/default.nix
+++ b/hosts/poseidon/default.nix
@@ -61,11 +61,14 @@ in
 
   # Some programs need SUID wrappers, can be configured further or are
   # started in user sessions.
-  programs.fish.enable = true;
-  programs.gnupg.agent = {
-    enable = true;
-    enableSSHSupport = true;
-    pinentryFlavor = "curses";
+  programs = {
+    fish.enable = true;
+    gnupg.agent = {
+      enable = true;
+      enableSSHSupport = true;
+      pinentryFlavor = "curses";
+    };
+    mosh.enable = true;
   };
 
   # List services that you want to enable:
diff --git a/services/borg-backup.nix b/services/borg-backup.nix
index 387a304..63aa427 100644
--- a/services/borg-backup.nix
+++ b/services/borg-backup.nix
@@ -54,6 +54,11 @@ in {
       environment.BORG_RSH = "ssh -i /root/borgbackup/ssh_key";
       compression = "auto,lzma";
       startAt = "daily";
+      prune.keep = {
+        daily = 7;
+        weekly = 4;
+        monthly = 6;
+      };
     };
   };
 }