diff --git a/tongfang/nixos/services.nix b/tongfang/nixos/services.nix
index 94ef325..796325b 100644
--- a/tongfang/nixos/services.nix
+++ b/tongfang/nixos/services.nix
@@ -24,9 +24,10 @@
   # Enable security-related service for realtime audio tasks
   security.rtkit.enable = true;
 
-  # Steam, Tailscale, and other services
+  # Steam, Tailscale, and other programs/services
   programs.steam.enable = true;
   services.tailscale.enable = true;
+  programs.partition-manager.enable = true;
 
   # Environment variables
   environment.variables = {
diff --git a/tongfang/nixos/users.nix b/tongfang/nixos/users.nix
index 4a09731..ff1f03b 100644
--- a/tongfang/nixos/users.nix
+++ b/tongfang/nixos/users.nix
@@ -31,4 +31,13 @@
     # Workaround for electron dependency in Logseq
     "electron-27.3.11"
   ];
+
+  # SSH agent configurations
+  programs.ssh.startAgent = true;
+  programs.ssh.extraConfig = ''
+    Host *
+      AddKeysToAgent yes
+      ServerAliveInterval 60
+      ServerAliveCountMax 3
+  '';
 }