diff --git a/system/core.nix b/system/core.nix
index bbf510f..aa224fb 100644
--- a/system/core.nix
+++ b/system/core.nix
@@ -101,4 +101,12 @@ in
     enable = true;
     enableSSHSupport = true;
   };
+
+  # This value determines the NixOS release from which the default
+  # settings for stateful data, like file locations and database versions
+  # on your system were taken. It‘s perfectly fine and recommended to leave
+  # this value at the release version of the first install of this system.
+  # Before changing this value read the documentation for this option
+  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
+  system.stateVersion = "25.11"; # Did you read the comment?
 }
\ No newline at end of file