diff --git a/nix/demo-server/default.nix b/nix/demo-server/default.nix
index dd4c4c1..c6b2aff 100644
--- a/nix/demo-server/default.nix
+++ b/nix/demo-server/default.nix
@@ -23,6 +23,8 @@
 
   networking.hostName = "archtika-demo-server";
 
+  security.pam.sshAgentAuth.enable = true;
+
   users = {
     mutableUsers = false;
     users = {