diff --git a/host/hummelberg/default.nix b/host/hummelberg/default.nix
index fd19914..11c673a 100644
--- a/host/hummelberg/default.nix
+++ b/host/hummelberg/default.nix
@@ -37,6 +37,5 @@
   # 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 = "20.09"; # Did you read the comment?
-
+  system.stateVersion = "21.05"; # Did you read the comment?
 }