diff --git a/nixos/modules/services/misc/redmine.nix b/nixos/modules/services/misc/redmine.nix
index 983ba57e57d6..e853d55840c5 100644
--- a/nixos/modules/services/misc/redmine.nix
+++ b/nixos/modules/services/misc/redmine.nix
@@ -80,7 +80,7 @@ in
       enable = lib.mkEnableOption "Redmine, a project management web application";
 
       package = lib.mkPackageOption pkgs "redmine" {
-        example = "redmine.override { ruby = pkgs.ruby_3_4; }";
+        example = "redmine.override { ruby = pkgs.ruby_3_3; }";
       };
 
       user = lib.mkOption {