diff --git a/modules/nixos/services/paperless/default.nix b/modules/nixos/services/paperless/default.nix
index 9fc0001..af4c617 100644
--- a/modules/nixos/services/paperless/default.nix
+++ b/modules/nixos/services/paperless/default.nix
@@ -3,8 +3,7 @@
   lib,
   pkgs,
   ...
-}:
-{
+}: {
   options.snowflake.services.paperless = {
     enable = lib.mkEnableOption "Enable paperless service";
 
@@ -24,10 +23,9 @@
     };
   };
 
-  config =
-    let
-      cfg = config.snowflake.services.paperless;
-    in
+  config = let
+    cfg = config.snowflake.services.paperless;
+  in
     lib.mkIf cfg.enable {
       age.secrets.paperless = {
         inherit (cfg.passwordFile) file;
@@ -47,6 +45,7 @@
           PAPEERLESS_TASK_WORKERS = 4;
           PAPERLESS_THREADS_PER_WORKER = 4;
           PAPERLESS_ADMIN_USER = cfg.adminUser;
+          PAPERLESS_FILENAME_FORMAT = "{created_year}/{document_type}/{title}";
         };
       };