diff --git a/hosts/lillyserver/systemd.nix b/hosts/lillyserver/systemd.nix
index bdc05fd..8bef4a0 100644
--- a/hosts/lillyserver/systemd.nix
+++ b/hosts/lillyserver/systemd.nix
@@ -1,12 +1,25 @@
 { pkgs, ... }:
 {
-  systemd.services.crowdsec-prefix = {
-    enable = true;
-    description = "Get IPv6 Prefix to add to Crowdsec Whitelist";
-    serviceConfig = {
-      Type = "oneshot";
-      ExecStart = "/mnt/lilly-ssd/appdata/crowdsec/crowdsec-prefix-change-script/checkprefix.sh";
-      WorkingDirectory = "/mnt/lilly-ssd/appdata/crowdsec/crowdsec-prefix-change-script";
+  systemd.services = {
+    crowdsec-prefix = {
+      enable = true;
+      description = "Get IPv6 Prefix to add to Crowdsec Whitelist";
+      serviceConfig = {
+        Type = "oneshot";
+        ExecStart = "/mnt/lilly-ssd/appdata/crowdsec/crowdsec-prefix-change-script/checkprefix.sh";
+        WorkingDirectory = "/mnt/lilly-ssd/appdata/crowdsec/crowdsec-prefix-change-script";
+      };
+    };
+  };
+  systemd.timers = {
+    crowdsec-prefix = {
+      enable = true;
+      description = "Run Crowdsec-Prefix check regularly.";
+      timerConfig = {
+        OnCalendar = "*:0/5";
+        Persistent = true;
+      };
+      wantedBy = [ "timers.target" ];
     };
   };
 }