diff --git a/jeschli/krops.nix b/jeschli/krops.nix
index 9a8a76676..59edd4273 100644
--- a/jeschli/krops.nix
+++ b/jeschli/krops.nix
@@ -11,7 +11,7 @@
       nixos-config.symlink = "stockholm/jeschli/1systems/${name}/config.nix";
       nixpkgs-unstable.git = {
         url = "https://github.com/nixos/nixpkgs-channels";
-        ref = "nixos-unstable";
+        ref = (lib.importJSON ../krebs/nixpkgs-unstable.json).rev;
       };
       secrets = if test then {
         file = toString ./2configs/tests/dummy-secrets;