diff --git a/nix/module.nix b/nix/module.nix
index 4fe0612..4fa7646 100644
--- a/nix/module.nix
+++ b/nix/module.nix
@@ -19,21 +19,23 @@ in {
       type = types.package;
       inherit (self.packages.${system}) default;
     };
-    twitch_id = mkOption {
-      type = types.str;
-    };
-    twitch_oauth = mkOption {
-      type = types.str;
+
+    environmentFiles = mkOption {
+      type = types.listOf types.path;
+      default = [];
+      example = ["/run/twitch_auth"];
+      description = ''
+        set twitch oauth / id
+      '';
     };
   };
 
   config = mkIf cfg.enable {
     systemd.services.botoh = {
       wantedBy = ["multi-user.target"];
-      serviceConfig.ExecStart = "${cfg.package}/bin/botoh";
-      environment = {
-        TWITCH_ID = cfg.twitch_id;
-        TWITCH_OAUTH = cfg.twitch_oauth;
+      serviceConfig = {
+        EnvironmentFile = cfg.environmentFiles;
+        ExecStart = "${cfg.package}/bin/botoh";
       };
     };
   };