diff --git a/Networks/raspberry_pi_rack.nix b/Networks/raspberry_pi_rack.nix
index ba7ddff..16d139a 100644
--- a/Networks/raspberry_pi_rack.nix
+++ b/Networks/raspberry_pi_rack.nix
@@ -29,8 +29,8 @@
       # compatible, in order to avoid breaking some software such as database
       # servers. You should change this only after NixOS release notes say you
       # should.
-      system.stateVersion = "19.03"; # Did you read the comment?
+      system.stateVersion = "19.09"; # Did you read the comment?
       system.autoUpgrade.enable = true;
-      system.autoUpgrade.channel = https://nixos.org/channels/nixos-19.03;
+      system.autoUpgrade.channel = https://nixos.org/channels/nixos-19.09;
     };
 }