diff --git a/immich-ml-container.nix b/immich-ml-container.nix
index e456e85..830616e 100644
--- a/immich-ml-container.nix
+++ b/immich-ml-container.nix
@@ -4,7 +4,7 @@ with lib;
 let
   cfg = config.services.immichMlContainer;
 
-  immichMlConfigYaml = pkgs.writeText "immich-ml-compose.yml" (toJSON {
+  immichMlConfigYaml = pkgs.writeText "immich-ml-compose.yml" (builtins.toJSON {
     version = "3.4";
     networks.default.name = "immich-ml";
     volumes = { };