diff --git a/modules/nextcloud.nix b/modules/nextcloud.nix
index 51f38b3..fc3d426 100644
--- a/modules/nextcloud.nix
+++ b/modules/nextcloud.nix
@@ -94,9 +94,27 @@ with lib;
   };
   # users.users.caddy.extraGroups = [ "nextcloud" ];
   users.users.chris.extraGroups = [ "nextcloud" ];
-  systemd.services.phpfpm-nextcloud.serviceConfig.StateDirectoryMode =
-    lib.mkForce "0770";
-
+  systemd.services = {
+    phpfpm-nextcloud.serviceConfig.StateDirectoryMode = lib.mkForce "0770";
+    nextcloud-previews = {
+      enable = true;
+      serviceConfig = {
+        Type = "oneshot";
+        ExecStart = "${config.services.nextcloud.occ}/bin/nextcloud-occ preview:pre-generate";
+      };
+    };
+  };
+  systemd.timers = {
+    nextcloud-previews = {
+      enable = true;
+      partOf = ["nextcloud-previews.service"];
+      timerConfig = {
+        OnCalendar = "*-*-* 00:02:30";
+        Unit = "nextcloud-previews.service";
+      };
+      wantedBy = [ "timers.target" ];
+    };
+  };
 
   environment.systemPackages = with pkgs; [
     nextcloud31