diff --git a/modules/services/nextcloud/default.nix b/modules/services/nextcloud/default.nix
index 3a5560b..5bae28b 100644
--- a/modules/services/nextcloud/default.nix
+++ b/modules/services/nextcloud/default.nix
@@ -128,6 +128,18 @@ in {
       ${pkgs.docker}/bin/docker network ls | ${pkgs.gnugrep}/bin/grep ${networkName} || ${pkgs.docker}/bin/docker network create ${networkName}
     '';
 
+    systemd.services.nexctcloud-cron = {
+      serviceConfig = { Type = "oneshot"; };
+      script = ''
+        ${pkgs.docker}/bin/docker exec -u www-data nextcloud php occ preview:pre-generate
+      '';
+    };
+
+    systemd.timers.nextcloud-cron = {
+      wantedBy = [ "timers.target" ];
+      partOf = [ "nextcloud-cron.service" ];
+      timerConfig.OnCalendar = "*:0/5";
+    };
     environment.shellAliases = {
       occ = "${pkgs.docker}/bin/docker exec -u www-data nextcloud php occ";
     };